Site partitions
Progects
Staff
Equipment
Partners
Our Publications
Contacts

 


Papers in Russian

Papers in English

1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  2013  2014  2015  2016

Superconductivity Enhancement in thin Films of Niobium in Superconducting Double-Barrier Structures

P. V. Komissinski and G. A. Ovsyannikov

We report the experimental results on the investigation of superconducting double-barrier structures with niobium interlayer and Al2O3 barriers. The experimental results can be explained by an extreme enhancement of superconductivity in the interlayer in accordance with the quasiparticle balance model, where the energy dependence of the inelastic relaxation time of quasiparticles with energy close to the superconducting gap is taken into account.

Phys. Rev. B, v. 54, p. 13184 (1996).

Paper in PDF-format


Electrical and magnetic characteristics of YBCO thin films on CeO2 buffered Al2O3 substrates

T. Nurgaliev, G. Ovsyannikov, S. Miteva, A. Mashtakov, P. Komissinski, and A. Spasov

Thin films of YBCO covered by protecting CeO2 overlayer were prepared on CeO2 buffered Al2O3 substrates and their magnetic characteristics were investigated at T>77 K using contactless dc and ac magnetic techniques. The critical current density Js measured at 77 K by different techniques was more or about 106 A/cm2: some difference in results was interpreted as due to the peculiarities of the methods. A non-conventional methods was developed to extract the Jc vs T dependence from the ac response signal parameters and for the considered films it was found to be best fitted with a quadratic function of the temperature. The Jc value decreased nearly two times when perpendicular dc magnetic field B=150 mT was applied: the time dependence of the trapped field was not pronounced at 77 K and it was less than 3 % for 7x103 s time interval.

Proceedings of the Third European Conference on Applied Superconductivity (EUCAS’97), Twente, The Netherlands, Inst. Phys. Conf. Ser. No 158, v. 1, p. 109 (1997)

Paper in PDF-format


Comparison of high-pressure dc-sputtering and pulsed laser deposition of superconducting YBa2Cu3Ox thin films

P. B. Mozhaev, P. V. Komissinski, N. P. Kukhta, A. Kuhle, G. A. Ovsyannikov, J. L. Skov

Superconducting YBa2Cu3Ox thin films were deposited on NdGaO3 (I IO) substrates using two different techniques: dc sputtering at high oxygen pressure and pulsed laser depositions. The structure, electrical properties and surface morphology of the obtained films were compared. The superior crystal quality of dc-sputtered films fabricated at the same temperature and at oxygen pressure  of the same range as for laser-deposited films can be explained by a lower deposition rate providing time for recrystallization processes. The re-evaporation becomes significant for dc sputtering at high deposition temperatures  and results in Ba-deficient films. The high mobility of atoms on the surface of the growing film during laser deposition helps in the formation of smooth c-oriented areas of the film.

J. of Supercond. v. 10, p. 221 (1997)

Paper in PDF-format


Improvement of the conducting parameters of YBa2CuOx films grown on sapphire through the use of a strontium titanate buffer layer.

G. A. Ovsyannikov, A. D. Mashtakov, P. B. Mozhaev, P. V. Komissinski, Z. G. Ivanov, P. Larsson

High-Tc superconducting films of YBa2Cu3Ox on sapphire with an additional buffer layer of strontium titanate (actually, on heterostructures (100)SrTiO3/(001)YBa2Cu3Ox/(100)CeO2/(1102)Al2O3) are obtained by laser deposition, and their superconducting characteristics are investigated. It is shown that buffering the sapphire by a strontium titanate film can raise the critical temperature of the YBa2CuOx films by two degrees and give a severalfold increase in the critical current density.

Technical Physics Letters, v. 24, p. 676 (1998)

Paper in PDF-format


The influence of the top and the bottom grain boundaries on the current transport in YBCO step-edge Josephson junction

F. Lombardi, Z. G. Ivanov, P. Komissinski, G. M. Fischer, P. Larsson and T. Claeson

We have studied the electrical transport properties of the grain boundaries (Gbs) formed at the top and at the bottom edges of YBa2Cu3O6-7 step-edge Josephson junctions, for different values of the step angle α . the step-edged functions were fabricated on (100) LaAlO3 steps using a tilted Ar ion milling. Due to the shadowing effect of the step, the middle and the bottom part of the step edge junction were contacted by thin stripes. We found that for α≈60o the top GB is responsible for the weak link behaviour of our step-edge junctions. On less steep steps, α≈45o, a series od GBs with weak link properties wwere found to nucleate along the step profile. We also correlated these results with the different microstructural properties of the GBs formed on steps with different angles.

Applied Superconductivity v. 6, p. 437 (1998).

Paper in PDF-format


Tunable detection of radiation from HTSC Josephson junction arrays

K. Lee, I. Iguchi, K.Y. Constantinian

We have investigated the mutual phase interaction between a single detector junction and a phase-locked three-junction array of high-Tc Josephson junctions. The YBCO Josephson junctions were fabricated on a MgO bicrystal substrate. We measured the radiation power of a Josephson-junction array using an off-chip coupled to a radiometer and on-chip coupled to a single junction from centimeter- to millimeter-wave ranges. The Josephson oscillation power excited the resonant mode coupled to the coplanar microstrip loops. Clear self-induced Shapiro steps were observed in the current–voltage curves of the detector junction. The power transfer to the single detector junction was estimated from the modulation of the Shapiro step height. The maximum detected power level was about 7 nW at frequency 150–250 GHz.

Physica C, v. 320, pp. 65–70 (1999)

Paper in PDF-format


Current transport along the [001] axis of  YBCO in low-temperature superconductor-normal metal-high-temperature superconductor heterostructures

F. V. Komissinskii, G. A. Ovsyannikov, N. A. Tulina, V. V. Ryazanov

The electrophysical properties of heterojunctions several microns in size, obtained by successive depopsition f the metal-oxide high-temperature superconductor YBa2CuOx, a normal metal Au, and the low-temperature superconductor Nb, were studied experimentally. Current flows in the [001] direction of the epitaxial YBa2CuOx  film. It is shown, by comparing the experimental data with existing theoretical calculations, that the experimentally realizable transmittances (D=10-5 - 10-6) of the YBa2CuOx normal metal boundary the critical current of the entire heterostructure is low (of the order of the fluctuation current) because of a sharp change in the amplitude of the potential or the superconducting carriers at this boundary. the current voltage characteristics of the heterostructure studied correspond to tunnel junctions consisting of a superconductor with dx2-y2 type symmetry of the superconducting wave function and a normal metal.

JETP v. 89, p. 1160 (1999)

Paper in PDF-format


Fabrication and properties of high-Tc ramp junctions with manganate barriers

M.Q. Huang, Z. G. Ivanov, P. V. Komissinski, and T. Claeson

We report on fabrication and characterization of YBa2Cu3O6-7 (YBCO) ramp junctions with a barrier of doped manganite, La0.67Sr0.33MnO3 (LSMO). Multilayers of YBCO and LSMO are epitaxially grown on (100) SrTiO3 substrates by on-axis pulsed laser ablation. The resistance and current-voltage characteristics of the ramp junctions have been measured as a function of barrier thickness, in the range of 10-30 mn, and of temperature. Junctions with 20 nm thick barriers had RSI-like current-voltage characteristics with a small excess current. The critical current density  and normal state resistance of the junctions at 4.2 K were 5x103 A/cm2 and 300 Ω, respectively.

Physica C, v. 326-327, p. 79 (1999).

Paper in PDF-format


Single Flux Quantum Comparators for HTS ADS Converters

A. Yu. Kidiyarova-Shevchenko, D. E. Kirichenko, Z. Ivanov, P. Komissinski, E. A. Stepancov, M. M. Khapaev, and T. Claeson

We have investigated different comparators for Flash and S-D high temperature superconducting ADCs designed using three-layer HTS tri-crystal junction integrated circuit technology with spread  of the junction critical currents less than 10 % and features size 0.6 µm. Using the theoretical estimations for the bit error rate in RSFQ circuit under the restrictions of the given technology, we have estimated working temperature as T=62 K.  At this temperature, the circuits were optimized in order to achieve maximum performance of the related ADCs in terms of inhibit bandwidth, resolution and operating margins. For design purposes, a novel method was developed for inductance calculation with 3D magnetic field distribution in multilayer superconducting technology and extraction of the inductance matrix of the equivalent circuit.

Physica C, v. 326-327, p. 83 (1999).

Paper in PDF-format


High-Tc Ramp Josephson Junctions for Rapid Single Flux Quantum Circuits

M. Q. Huang, P. V. Komissinski, P. B. Mozhaev, Z. G. Ivanov and T. Claeson

Ramp-type Josephson junctions with YBCO superconducting electrodes and PrBa2Cu2.6O6+δ (PBBGCO) barriers were fabricated and characterized. The YBCO ramp junctions with 25 mn-thick barriers of PBGCO showed  typical resistively-shunted-junction (RSJ)-like I-V behavior and 1σ spread of less than 13 % in critical current density. Differential conductance-voltage characteristics registered using a lock-in technique indicate that the resonant tunneling via localized states in the barriers plays a dominant role in the conduction process of the ramp junctions.

J. of Low Temp. Phys. v. 117, p. 587 (1999).

Paper in PDF-format


Structural Studies of YBCO Ramp Josephson Junctions for
Rapid Single Flux Quantum Circuits

M. Gustafsson, E. Olsson, M. Q. Huang, P. V. Komissinski, P. B. Mozhaev,
and Z. G. Ivanov

Ramp-type Josephson junctions with barrier layers of Ga doped PrBa2CuO7-δ have been investigated using scanning and transmission electron microscopy. The microstructures have been correlated to the ramp geometry. The junctions exhibited low excess current. This is believed to be due to the uniform thickness of barrier layer deposited on the ion-milled edges. The uniformity of the barrier is presumed to be a result of the smooth rump, which promoted uniform nucleation and epitaxial growth.

J. of Low Temp. Phys. v. 117, p. 575 (1999).

Paper in PDF-format


Current transport mechanism in YBCO bicrystal junctions on sapphire.

G.A. Ovsyannikov, I.V. Borisenko, A.D. Mashtakov, K.Y. Constantinian

YBCO junctions were made on r-cut sapphire bicrystal substrates in which the directions <1120> for both parts of the substrate have the angles ±12° to the plane of the interface of electrodes. The junctions were tested at dc and mm waves. The junctions with 5 µm width have high normal resistance RN=10-20 W, IcRN=1-2 mV and tolerance of characteristic interface resistance around 30% on a chip. DC, microwave and magnetic characteristics of the junctions have been investigated experimentally. The sinusoidal superconducting current-phase relation and a linear dependence of critical current density vs square root of the barrier transparency was revealed. Experimental results are discussed in framework of predictions for superconducting current transport via Andreev bound surface states in bicrystal junction.

IOP Conf.Ser., No 167, pt. II, pp. 253-256 (2000)

Paper in PDF-format


YBa2Cu3Ox/CeO2/NdGaO3 epitaxial heterostructures at different substrate orientations.

I.K. Bdikin, I.M. Kotelyanskii, E.K. Raksha, A.D. Mashtakov, P.B. Mozhaev, P.V. Komissinskii, G.A. Ovsyannikov

YBa2Cu3Ox/CeO2 epitaxial heterostructures were grown on NdGaO3 substrates with surface orientation tilted from the (110) plane. Two types of epitaxial relations were observed for CeO2 buffer layer, depending on deposition technique and deviation angle of the substrate surface from the (110) NdGaO3 plane. The YBa2Cu3Ox thin films on the CeO2 buffer layer grow either oriented with c axis normal to substrate plane, or following the orientation of the <100> axes of the buffer layer. Observed changes in epitaxy can be explained with different film formation mechanism at different deposition rates.

IOP Conf.Ser., No 167, pt. II, pp. 121-124 (2000)

Paper in PDF-format


MM wave Josephson radiation in High-Tc bicrystal junction arrays

K.Y. Constantinian, A.D. Mashtakov, G.A. Ovsyannikov, V.K. Kornev, A.V. Arzumanov, N.A. Shcherbakov, M. Darula, J. Mygind, N.F. Pedersen

High-Tc Josephson junction arrays with coupling by superconducting short-circuited (5 mm wide and 0.1 mm thick) coupled microstrip lines, provided dc bias in parallel, were fabricated on bicrystal sapphire substrates for experimental investigation of the phase-locking phenomenon. Josephson self radiation, emitted by the array was measured by an external 90 GHz receiver for different applied dc magnetic fields. The numerical simulation of array shows that strong interaction between Josephson junctions and the standing waves within structure require small enough damping a<10-3 per coupling section for reduction of Josephson oscillation linewidth.

IOP Conf. Ser., No 167, pp. 717-720 (2000)

Paper in PDF-format


Substitutions in the Nd/Ba Cation Subsystem in Thin Films of the NdBa2Cu3Oy High-Temperature Superconductor

P.B. Mozhaev, F.V. Komissinskii, Z.G. Ivanov, G.A. Ovsyannikov

Thin films of the Nd1+xBa2-xCu3Oy high-Tc superconductor (NBCO) with different neodymium/barium ratios have been obtained by laser ablative cosputtering of targets with different elemental compositions. The films with excess neodymium (x>0) had a low surface particle density and were rough, but their critical temperature decreased with increasing x. On the contrary, barium-rich films (x<0) exhibited independence of the superconducting properties of the film composition, with an appreciable amount of particles observed on the surface. Substitution of Ba for Nd in NBCO thin films is apparently impeded, so that excess barium precipitates in the form of (Ba,Cu)Oz particles. The structure and superconducting properties of NBCO reveal a strong dependence on the conditions of film saturation by oxygen.

Physics of the Solid State, Vol. 42, No 9, pp. 1590-1595 (2000), Translated from Fizika Tverdogo Tela, Vol. 42, No 9, pp. 1547-1552 (2000).

ZippedPaper in PDF-format


Particle formation on the YBCO thin film surface: effect of stoichiometry and substrate material

P.B. Mozhaev, F. Ronnung, P.V. Komissinskii, Z.G. Ivanov, G.A. Ovsyannikov

Particle formation on the YBa2Cu3O7-x (YBCO) thin film surface deposited by laser ablation was studied. Ablation of a stoichiometric YBCO target results in Ba-deficient films, probably due to Ba scattering in oxygen atmosphere. Partial melting of the target surface during ablation provided additional Ba flow and resulted in smooth films. Surface quality of the YBCO film with improved element composition depends on lattice mismatch between the growing film and the substrate. Increase of deposition temperature over some threshold level, specific for each tested substrate material, results in particle appearance on the film surface even in the films with improved element composition. Chemical interaction, caused by oxygen depletion of the substrate surface, can be the reason for this effect.

Physica C, v. 336, pp. 93–101 (2000)

Paper in PDF-format


Orientation relations and twinning in heterostructures YBa2Cu3Ox//NdGaO3 and YBa2Cu3Ox//CeO2//Al2O3

I.K. Bdikin, A.D. Mashtakov, P.B. Mozhaev, G.A. Ovsyannikov

Epitaxial YBa2Cu3Ox (YBCO) thin films on (110) NdGaO3 and (100)CeO2//(1102)Al2O3 substrates were studied with X-ray diffraction methods, orientation features of film twinning were determined. Films on both substrates were mainly c-oriented with c=11.67 A. Orthorhombic structure of NdGaO3 results in increase of the angle between (110) and (110) twinning planes in YBCO films to 90.20° and in difference in volume of two twin domain systems. About 60% of YBCO film on CeO2//Al2O3 substrates show no twinning. The lattice direction [1102] of the Al2O3 substrate and [100] of the CeO2 film were inclined by 0.15°; this inclination can result from high lattice mismatch between CeO2 film and Al2O3 substrate. The [001] direction of the YBCO film was inclined to [1102] Al2O3 direction only by 0.06°. The spread of in-substrate-plane misorientation in CeO2 film of 1.65° was also higher than that of the YBCO film (1.22°).

Physica C, v. 334, pp. 168–174 (2000)

Paper in PDF-format


Electron transport in high-Tc superconducting grain boundary junctions

G.A. Ovsyannikov, I.V. Borisenko, K.Y. Constantinian

The current state and the prospects of the application of high-Tc superconducting grain boundary Josephson junctions in microwave electronics devices are given. It is approached by sketching the typical fabrication technique of the junction. Josephson bicrystal junctions on sapphire substrate are considered in detail. The results of dc microwave and magnetic measurements of YBCO bicrystal junctions on r-cut sapphire are presented. The junctions with high resistance 10-20 W and IcRN=1-2 mV and tolerance of RNS around 30% on the chip allow to create microwave circuits with low integration (up to 10 junctions on chip). The microwave dynamics of the junction with superconducting current-phase relation fits with sinf relation better than 5%, that clearly indicates the tunnel conductivity between two YBCO electrodes. It was found that critical current density depends on the square root of interface transparency in accordance with the prediction of superconducting current transport via Andreev's bound surface states. The specific properties of current transport in high-Tc grain boundary junctions with taking into account d-wave type of gap order in high-Tc superconductor are discussed.

Vacuum, v. 58, pp. 149-157 (2000)

Paper in PDF-format


Arrays of Josephson Junctions Coupled by Distributed Circuits

V.K. Kornev, N.A. Shcherbakov, A.V. Arzumanov, P.B. Mozhaev, A.D. Mashtakov, K.Y. Constantinian, G.A. Ovsyannikov

Both the linewidth reduction and the gain in output power have been analyzed for Josephson-junction arrays with distributed coupling circuits. Different ways of Josephson junction connection to the distributed circuits, as well as both the nonlinear interaction effect and the crucial role of high frequency losses have been studied. It has been found that the contradictory requirements to the junctions as nonlinear active elements on (i) low wave reflection and (ii) high total power produced can be fulfilled by an increase in number of Josephson junctions with a proper impedance value. The first condition is necessary to provide the most reduction in the linewidth, and the second one is needed to compensate for the power output. An array of the biased in parallel bi-crystal Josephson HTSC junctions coupled by microstrip circuit has been fabricated and preliminary tested.

Presented on the Applied Superconductivity Conference '2000 (2000)

Paper in PDF-format


Superconducting Current - Phase Dependence in Josephson YBCO Bicrystal Junctions on Sapphire

I.V. Borisenko, G.A. Ovsyannikov, K.Y. Constantinian, E.A. Stepantsov

The deviation of superconducting current-phase relation (CPR) in Josephson junction (JJ) from sinusoidal one is very important for the application of JJ in electronics. The dependencies of the amplitudes of the harmonic and subharmonic Shapiro steps were used to study CPR of YBCO JJ on a bicrystal sapphire substrate. It is shown that for a symmetric set of the transport current across the symmetric bicrystal junction, the CPR is close to sinusoidal one that differs from the theoretical predictions based on d-type of superconducting wave function in the electrodes. The divergence from symmetry in the transport current across JJ causes the CPR to deviate from sinusoidal type and the deviation increases with increasing degree of asymmetry. This change in the CPR is discussed within the model, which takes into account the formation of coupled Andreev states in JJ of superconductors with a d-type of superconducting wave function.

Presented on the Applied Superconductivity Conference '2000 (2000)

Paper in PDF-format


Current transport in Au/YBCO junctions in c-axis and tilted directions of YBa2Cu3Ox thin films

P. Komissinski and G. A. Ovsyannikov

We report on the fabrication technique and investigation of current properties of Au/YBa2Cu3Ox junctions. The junctions were processed in epitaxial YBa2Cu3Ox (YCBO) thin films grown by laser ablation. (001) LaAlO3 and (120) NdGaO3 substrates were used to grow correspondingly (001)-oriented and tilted YBaCO films. Current-voltage characteristics, Z-V-curves, and the dependencies of the differential resistance on the applied voltage, Rd(V), were measured and the anisotropy of the current transport in these junctions was studied.

Proceedings of the Fourth European Conference on Applied Superconductivity (EUCAS’99), Sitges, Spain, Inst. Phys. Conf. Ser. No 167, v. 2, p. 233 (2000).

Paper in PDF-format


S-D modulator for TS ADC based on the ramp-type Jusephson junctions

A. Yu. Kidiyarova-Shevchenko, M. Huang, P. Komissinski, Z. Ivanov, and T. Claeson

An all high-Tc modulator for Σ-Δ analog-to-digital converters (ADC) was optimized with parameters determined by a ramp type Josephson junction technology having a critical current spread less than 13% and using four superconducting layers. Equivalent circuit inductances were extracted from layouts with the help of a new multilayer 3D-MLSI software package. The resulting performance of the ADC is analyzed in detail and possible improvements are discussed.

Proceedings of the Fourth European Conference on Applied Superconductivity (EUCAS’99), Sitges, Spain, Inst. Phys. Conf. Ser. No 167, v. 2, p. 737 (2000).

Paper in PDF-format


Spectral characteristics of mm wave radiation emitted by HTSC Josephson-junction arrays

G. A. Ovsyannikov, A.D. Mashtakov, K. Y. Constantinian, A. V. Arzumanov, N. A. Shcherbakov, M. Darula, J. Mygind, N. F. Pedersen

 

Abstract 5EF04, ASC2000.


YBCO Josephson junctions on bicrstal sapphire substrates for submm wave application

K. Y. Constantinian, G. A. Ovsyannikov, I. V. Borisenko, A. D. Mashtakov, N. G. Pogosyan, A. A. Hakhoumian, J. Mygind, N. F. Pedersen

 

Abstract 2EC02 ASC2000, p. , 2000.


Surface Resistance of the Y-Ba-Cu-O Thin Films at Sub-MM Wave Frequencies

Arsen Hakhoumian, Nubar Pogosyan, Tigran Zakaryan, Gennady Ovsyannikov, Karen Constantinian

 

Abstract 4MA06, ASC2000.


Investigation of current carrying and microwave characteritics of double-side YBCO thin films

T. Nurgaliev, T. Donchev, V. Tsaneva, S.Miteva, R. Chakalov, A. Spasov, A. Mashtakov, G. Ovsyannikov

 

Physica B, 284-288, p.957-958, (2000).


Re/Ba interchange in the ReBCO thin films and oxygenation after deposition

P.B. Mozhaev, G.A. Ovsyannikov, P.V. Komissinskii, Z.G. Ivanov, T. Claeson, I.K. Bdikin

 

Applied Superconductivity Conference 2000, Abstract, USA, p.193, 2000.


Epitaxial growth of YBa2Cu3Ox/CeO2/NdGaO3 heterostructures at different substrate orientations

I.K. Bdikin, I.M. Kotelyanskii, E.K. Raksha, A.D. Mashtakov, P.B. Mozhaev, P.V. Komissinskii, G.A. Ovsyannikov

 

Applied Superconductivity Conference 2000.


Electon transport in c-axis and tilted c-axis YBa2Cu3Ox/normal metal contacts

P. Komissinski, Z. Ivanov, I. Bdikin, P. Mozhaev, G. Ovsyannikov

 

Presented on Applied Superconductivity Conference 2000 (ASC 2000), Virginia, USA, Abstract book p. 193 (2000).


Temperature Behavior of Electron Transport in Normal-Metal-HTSC Heterojunctions

F. V. Komissinskii, G. A. Ovsyannikov, and Z. G. Ivanov

Current transport in micron-sized normal-metal - high-temperature superconductor heterojunctions (Au/YBa2Cu3O6+x) was studied for two crystallographic orientations of YBCO films. It is shown that depending of the transport-current flow direction relative to the crystallographic axes of the YBCO film, the electronic transport properties of Au/YBCO heterojunctions with highly transparent boundaries change from quasi-tunneling (along the YBCO c axis) to close-to-Ohmic (in the directions lying in the YBCO basal plane).

Physics of the Solid State v. 43, p. 801 (2001)

Paper in PDF-format


Observation of the Second Harmonic in the Phase Dependence of a Superconducting Current in Nb/Au/YBCO Heterojunctions

F. V. Komissinskii, G. A. Ovsyannikov, E. Il’ichev, and Z. Ivanov

The second harmonic in the dependence of a superconducting current on the phase difference of superconducting wave functions of the electrodes was observed experimentally in Nb/Au/(001)YBa2Cu3Ox heterojunctions. Possible reasons for its appearance were discussed within the framework of a mixed (d ± s) symmetry order parameter of YBa2Cu3Ox .

Sov. Phys. JETP Lett. v. 73, p. 361 (2001)

Paper in PDF-format


Small Scale Integrated Technology for HTS RSFQ Circuits

M.Huang, P. V. Komissinski, A. Yu. Kidiyarova-Shevchenko, M. Gustafsson, E. Olsson, B. Högberg, Z. Ivanov, and T. Claeson

A technology for fabrication of YBCO ramp junctions on a superconducting ground plane is developed and evaluated. The technology is based on a two-layer, S-I, structure or on a four-layer, S-I-S-I , structure grown in situ with YBCO superconductor and with multilayer insulator of PBCO/STO/PBCO. Rumps for junctions, via connections and crossovers are formed by Ar ion milling under rotation and the ramp angle is less than 30° for all directions. A 20-25 nm thick Ga-doped PBCO was used as a barrier for Josephson junctions. One additional YBCO layer, for junction top electrodes and wiring , is deposited and patterned. Surface roughness of multilayers is characterized by AFM and is related to the junction parameters. Transport properties of junctions, via connections and crossovers are evaluated.

IEEE Trans. on Appl. Supercond., v. 11, p. 558 (2001).

Paper in PDF-format


Observation of the second harmonic in superconducting current-phase relation of Nb/Au/(001)YBa2Cu3Ox heterojunctions

P. V. Komissinski, E. Il’ichev, G. A. Ovsyannikov, S. A. Kovtonyuk, M. Grajcar, R. Hlubina, Z. Ivanov, Y. Tanaka, N. Yoshida, and S. Kashiwaya

The superconducting current-phase relation (CPR) of Nb/Au/(001)YBa2Cu3Ox heterojunctions prepared on epitaxial c-axis oriented YBa2Cu3Ox thin films has been measured in a single-junction interferometer. For the first time, the second harmonic of the CPR of such junctions has been observed. The appearance of the second harmonic and the relative sign  of the first and second harmonics of the CPR can be explained assuming, that the macroscopic pairing symmetry of our YBa2Cu3Ox thin films is of the d + s type.

European Physics Letters 2001, in press.

Paper in PDF-format


Submicron YBACuO ramp Josephson junctions

P. Komissinski, B. Högberg, A. Tzalenchuk, Z. Ivanov, and T. Claeson

Submicron YBa2Cu3Ox/PrBa2Cu2.6Ga0.4Ox/YBa2Cu3Ox ramp-type Josephson junctions were fabricated and tested. The submicron bridges in the top electrode were patterned by e-beam lithography and Ar ion milling through an amorphous carbon (a-C) mask. Junctions with width ranging from 0.2 to 8 µm and oriented along different crystal directions of  YBa2Cu30x have been produced. Current-voltage characteristics show a behavior consistent with the resistively shunted junction model with small excess current. Junction critical current densities of about 10 kA/cm2 and characteristic voltages up to 6mV were measured at 4.2 K for the submicron junctions. Junctions along different crystal orientations showed different characteristics suggesting an influence from the d-wave order parameter.

submitted to Applied Physics Letters, 2001.

Paper in PDF-format


Experimental study of noise and Josephson oscillation linewidths in bicrystal YBCO junctions

K. Y. Constantinian, G.A. Ovsyannikov, I. V. Borisenko, N. G. Pogosyan,A. A. Hakhoumian, J. Mygind, N. F. Pedersen

International Superconducting Electronics Conference, Japan, Extended absracts, p.205-206, .2001


Observation of voltage-tunable submm wave response from YBCO Josephson device, operating in self-pumping mode

K Y. Constantinian, G.A. Ovsyannikov, I. V. Borisenko, P. Yagoubov

8th International Superconducting Electronics Conference, Japan, Extended absracts, p.79-80, 2001; Supercond. Sci. Technology, 14, 1005-1008, 2001


Temperature dependence of submm wave detector response from YBCO Josephson junction on bicrystal sapphire substrate

K Y. Constantinian, G.A. Ovsyannikov, I. V. Borisenko, P. Yagoubov

International Superconducting Electronics Conference, Japan, Extended absracts, p.511-512, 2001


High-Tc Josephson-Junction Arrays with Distributed Coupling Circuits

Victor K. Kornev, Nikita A. Shcherbakov, Peter B. Mozhaev, Igor V. Borisenko, Karen Y. Constantinian, Gennady. A. Ovsyannikov

International Superconducting Electronics Conference, Japan, Extended absracts, p.209-210, 2001


Low voltage excess noise and shot noise in YBCO bicrystal junctions

K. Y. Constantinian, G. A. Ovsyannikov, I. V. Borisenko

International symposium on Superconducting Device Physics, Tokyo, 2001, report Ja-4; Physica C, 367, 276-279, 2002


Voltage-tunable YBCO Josephson mixer, operating in self-pumping mode at 750-970 GHz

K.Y. Constantinian, G.A. Ovsyannikov, I.V. Borisenko, P. Yagoubov

presented at EUCAS2001; Physica C 372-376, p. 420-422, 2002


Experimental study of submm wave response and noise of bicrystal YBCO Josephson junctions

K.Y. Constantinian, G.A. Ovsyannikov, Yu. V. Kislinskii I.V. Borisenko,N.G. Pogosyan, A. A. Hakhoumian, J. Mygind and N. F. Pedersen

5th European Conf. on. Appl. Superconductivity, Abstracts, p.111, 2001; Supercond. Sci. Technology, 14, 1035-1039, 2001


Influence of thermal fluctuation on sensitivy of submm wave signal detection by bicrystal YBCO Josephson junctions

Karen Constantinian, Gennady Ovsyannikov, Yulii Kislinskii, IgorBorisenko

presented at EUCAS-2001


Pi – Interferometer Dynamics

V.K. Kornev, I.I. Soloviev, G.A.Ovsyannikov*, P.B. Mozhaev*

presented at EUCAS-2001


Dynamics of Superconducting Interferometers Containing pi-Junctions

V.K. Kornev, I.I. Soloviev, G.A.Ovsyannikov, P.B. Mozhaev, N.F. Pedersen

International workshop on “Superconducting nano-electronics devices”, Italy, 2001


Superconducting current-phase dependence in high-Tc symmetrical bicrystal junctions

Gennady A. Ovsyannikov, Igor V. Borisenko, Peter B. Mozhaev, Karen I. Constantinian

International workshop on “Superconducting nano-electronics devices”, Italy, 2001


High-temperature superconducting bi-crystal Josephson junctions with asymmetric current biasing

P.B. Mozhaev, G.A. Ovsyannikov, E.G. Ovsyannikova, I.V. Borisenko

5th European Conf. on. Appl. Superconductivity, Abstracts, p.95, 2001


Bicrystal Josephson –junction arrays coupled by distributed circuits

V.K. Kornev, N.A. Shcherbacov, I.V. Borisenko, G.A. Ovsyannikov, K.Y. Constantinian, P.B. Mozhaev

5th European Conf. on. Appl. Superconductivity, Abstracts,p.118, 2001


Dynamics of some pi-junction interferometers

V.K. Kornev, N.F. Pedersen, A.V. Arzumanov, P.B. Mozhaev, N.A. Shcherbacov

5th European Conf. on. Appl. Superconductivity, Abstracts, p.122, 2001


Twinning in YBCO films on substrates of different materials and at different orientation

P.B. Mozhaev, I.K. Bdikin, P.V. Komissinskii, G.A. Ovsyannikov

5th European Conf. on. Appl. Superconductivity, Abstracts, p.237, 2001


High-Tc Josephson-junction arrays with distributed coupling circuit

V.K. Kornev, N.A. Shcherbacov, P.B. Mozhaev, I.V. Borisenko, K.Y. Constantinian, G.A. Ovsyannikov

8th Int. Superconductive Electronics Conf., extended abstracts, p.209, 2001


Pi-junction circuit dynamics

V.K. Kornev, I.I. Soloviev, P.B. Mozhaev, E.G. Ovsyannikova, I.V. Borisenko, G.A. Ovsyannikov, N.F. Pedersen

8th Int. Superconductive Electronics Conf., extended abstracts, p.561, 2001


Interection of YBCO bicrystal junctin with electromagnetic surrounding

I.V. Borisenko, G.A. Ovsyannikov, K.Y. Constantinian

5th European Conf. on. Appl. Superconductivity, Abstracts, p.111, 2001


Arrays of Josephson junctions coupled by distributed circuits

V K. Kornev, N.A. Shcherbakov, A. V. Arzumanov, P. B Mozhaev, K. Y. Constantinian, A. D. Mashtakov, G. A. Ovsyannikov

IEEE Trans. on Appl. Superconductivity, 11, 2001, pp. 1227-1230


Superconducting Current-Phase Relation of Nb/Au/(001)YBCO heterojunctions

P.V. Komissinski, Z.G. Ivanov, E. Il’ichev, G.A. Ovsyannikov, M. Graicar, R.Hlubina

Physics and Applications of Superconducting Quantum Interference (SQUID 2001), Sweden, 2001, Book of Abstracts p.41; Physica C v. 368, pp. 271-275 (2002)


Pi-Interferometer Dynamics

V.K. Kornev, I.I. Soloviev, G.A. Ovsyannikov, P.B. Mozhaev, N.F. Pedersen

Physics and Applications of Superconducting Quantum Interference (SQUID 2001), Sweden, 2001, Book of Abstracts p.53


Superconducting Current-Phase Dependence in High-Tc Symmetrical Bicrystal Junctions

I.V. Borisenko, G.A. Ovsyannikov, P.B. Mozhaev, G.A. Ovsyannikov, K.Y. Constantinian

Physics and Applications of Superconducting Quantum Interference (SQUID 2001), Sweden, 2001, Book of Abstracts p.54


Growth and domain structure of YBCO thin films and YBCO/CeO2 heterostructures on tilted NGO substrates

I.K. Bdikin, P.B. Mozhaev, G.A. Ovsyannikov, P.V. Komissinski, I.M. Kotelyanskii

Physica C377, 26-35, 2002


Superconducting current-phase relation in high-Tc symmetrical bicrystal junction

I.V. Borisenko, P.B. Mozhaev, G.A. Ovsyannikov, K.Y. Constantinian, E.A. Stepantsov

Physica C, 3678, 328-331, 2002


Submicron YBaCuO ramp Josephson junctions

P. Komissinski, B. Högberg, A. Tzalenchuk, Z. Ivanov, and T. Claeson

Applied Physics Letters v. 80, N.6, pp.1022-24 (2002)


Observation of the second harmonic in superconducting current-phase relation of Nb/Au/(001)YBa2Cu3Ox heterojunctions

P. V. Komissinski, E. Il’ichev, G. A. Ovsyannikov, S. A. Kovtonyuk, M. Grajcar, R. Hlubina, Z. Ivanov, Y. Tanaka, N. Yoshida, and S. Kashiwaya

European Physics Letters v. 57, N.4, pp. 585-591, 2002


Submillimeter wave signal detection by bicrystal YBCO Josephson junctions at liquid nitrogen temperatures

Yu.V. Kislinskii, K.Y. Constantinian, I.V. Borisenko, G.A. Ovsyannikov, P. Yagoubov

Physica C 372-376, p.436-439, 2002


Bicrystal pi interferometers

Kornev V.K., Ovsyannikov I.G. A., Mozhaev P.B., Borisenko I.V., and Pedersen N.F.

Physica C 368, pp. 332-336 (2002)


Andreev States and Josephson Effect in Superconducting Heterojunctions on thin YBCO films

P.V.Komissinski, G.A. Ovsyannikov, Yu.V. Kislinski, I.M. Kotelyanski, Z.G. Ivanov

Experimental and Theoretical Physics, 95, N6, 1074-1084, 2002


Superconducting current–phase relation and Andreev bound states in Josephson Nb/Au/YBCO heterojunctions

G.A. Ovsyannikov, P.V. Komissinski, Yu.V. Kislinski, Z.G. Ivanov

Modern Physics Letters B, 17, N10-12, 569-578, 2003


The 0 and pi contact array model of bicrystal junctions and interferometers

Victor K. Kornev, Igor I. Soloviev, Nikolai V. Klenov, Niels F. Pedersen, Igor V. Borisenko Peter B. Mozhaev, Gennady A. Ovsyannikov

IEEE Transaction on Applied Superconductivity, June 2003, vol. 13, No. 2. p. 825-828


Josephson Effect in Superconducting Heterojunctions on thin YBCO films

G.A. Ovsyannikov, P.V.Komissinski, E. Il’ichev, Yu.V. Kislinski, Z.G. Ivanov

IEEE Tr. On Appl. Superconductivity, v.13, N2, 881-884, 2003


Shot noise of YBCO bicrystal Josephson junctions

K Y. Constantinian, G.A. Ovsyannikov, I. V. Borisenko, J. Mygind, N.F. Pedersen

IEEE Tr. On Applied Supercondutivity, v.13, N2, 610-613, 2003


Dc SQUID Behavior Resulting from no Sinusoidal Current-Phase Relation of Bicrystal Junctions

V.K, Kornev, N.V. Klenov I. V. Borisenko, G. A. Ovsyannikov

European Applied Superconductivity Conference (EUCAS’03), Italy, September 2003. Abstract p.146; Inst. Physics Conf. Ser. No 169, IOP Publishing Ltd, 2004, to be published


Josephson dynamics of [100] tilted YBCO bicrystal junctions on NdGaO3

G. A. Ovsyannikov, I.V. Borisenko, I.M. Kotelyanski, Yu. V. Kislinskii, P. V. Komissinski

European Applied Superconductivity Conference (EUCAS’03), Italy, September 2003. Abstract p.167


Shot noise in YBCO bicrystals and hybrid heterostruvtures

K. Y. Constantinian, G. A. Ovsyannikov, P. V. Komissinski, I.V. Borisenko

European Applied Superconductivity Conference (EUCAS’03), Italy, September 2003. Abstract p.211


Thin film Nb/Au/YBCO Superconducting Heterojunctions

P. V. Komissinski, K.Y. Constantinian, Yu. V. Kislinskii, G. A. Ovsyannikov, Z.G. Ivanov

European Applied Superconductivity Conference (EUCAS’03), Italy, September 2003. Abstract p.212


Andreev reflection in superconducting cuprate nanostructures: hetero- and bicrystal junctions

G. A. Ovsyannikov , P. V. Komissinski, I.V. Borisenko

European science foundation summer school on superconductivity. Crete, Greece September 20 - 27 ( 2003 ). Abstract p.102


Non-equilibrium shot noise in YBaCuO Josephson junctions on symmetric bicrystal substrates

K. Y. Constantinian, I.V. Borisenko, Y.V. Kislinskii, M. I. Bukharov, G. A. Ovsyannikov

presentation at International conference on superconducting electronics, Sydney, Australia, June 2003.Abstract p.Otu3


The Growth and Conductivity of CaCuO2 epitaxial thin films

G.A. Ovsyannikov, S.A. Denisuk, Z. Ivanov, T. Claeson

“7th International Conference on Materials and Mechanisms of Superconductivity and High Temperature Superconductors”, Rio de Janeiro, Brazil, May 2003. p.165, Physica C,v408-410, p.616-617, 2004


Near-field millimeter-wave Measerement of HTSC Film Surface Resistance

A. Hakhoumian, N. Pogosyan, T. Zakaryan, D. Bagdasaryan, G. Ovsyannikov, K. Constantinian

“7th International Conference on Materials and Mechanisms of Superconductivity and High Temperature Superconductors”, Rio de Janeiro, Brazil, May 2003. p.256


Josephson bicrystal junctions on sapphire substrates for submm waves receiver

I.V. Borisenko, K. Y. Constantinian, Y.V. Kislinski, G. A. Ovsyannikov, A. A. Hakhoumian, N. G. Pogosyan

Submitted to the fifthe International Kharkov symposium on Physics and engineering of microwaves, mollimeter and submillimetere waves, Kharkov, Ukrane, 2004


Josephson bicrystal junctions on sapphire substrates for THz frequency applications

K.Y. Constantinian, G.A. Ovsyannikov, I.V. Borisenko, Y.V. Kislinski, A.A. Hakoumian, N.G. Pogosyan

8th Symposium on High-Temparature Superconductors in High-Frequency Fields, Spain, 2004, p.55


Bandwidth and noise of submm wave detector on cuprate Josephson bicrystal junctions on sapphire substrates

G. A. Ovsyannikov, I.V. Borisenko, K. Y. Constantinian, Y.V. Kislinski, A. A. Hakhoumian, N. G. Pogosyan, T. Zakaryan, N.F. Pedersen, J. Mygind, N. Uzunoglu, E. Karagianni

Applied Superconductivity conference, USA, 2004


Size dependence of Josephson effect in hybrid oxide superconducting heterostructure

G.A. Ovsyannikov, P.V. Komissinski, Y.Y Kislinskii, I.V. Borisenko I.V.Constantinian, V.K. Kornev, T.Yu. Karminskaya

Applied Superconductivity conference, USA, 2004


Josephson dynamics of [100] tilted YBCO bicrystal junctions on NdGaO3

I.V. Borisenko, I.M. Kotelyanski, P. V. Komissinski, A.V. Shadrin, G. A. Ovsyannikov

Applied Superconductivity conference, USA, 2004


The Growth and Conductivity of Infinite Layer Cuprate Oxide Thin Films

G.A. Ovsyannikov, S.A. Denisuk, I.K. Bdikin

1st Topical Meeting Properties of Ultrathin oxide films , Italy 2004 p. 43


Current-Phase Relation and Noise in Hybrid Nb/Au/YBCO Heterojunctions

G.A. Ovsyannikov, P.V. Komissinskii, Y.V. Kislinski, K.Y. Constantinian

The Joint International Workshop on Nanostructured Superconductors: From fundamentals to application, Germany, May 2004 p.28


Josephson Parameters of Bicrystal Junctions of a New Type Based on Metal Oxide Semiconductors

I. V. Borisenko, A. V. Shadrin, G. A. Ovsyannikov, I. M. Kotelyanskii, and F. V. Komissinski

We have studied symmetric bicrystal Josephson junctions of a new type based on metal oxide superconductors in which the base planes are misoriented relative to the [100] direction by an angle within 22°–28°. These junctions exhibit record high values of the critical parameters at T=77 K: the critical current density reaches IC=(2–5)×105 A/cm2 and the characteristic voltage is VC=ICRN=0.6–0.9 mV. The properties of the new junctions have been determined for the first time under the influence of monochromatic microwave radiation in the millimeter wavelength range and have been studied as functions of the magnetic field and temperature. The observed dependences of the critical current and the Shapiro step height on the electromagnetic field amplitude agree well with the theoretical predictions according to the resistive shunted junction model of the Josephson junction. The new junctions can be used in real superconducting devices operating at liquid nitrogen temperatures.

Technical Physics Letters, Vol. 31, No. 4, 2005, pp. 332–335

Paper in PDF-format


Metal Oxide Bicrystal Josephson Junctions of a New Type with High Critical Parameters

I. M. Kotelyanskii, I. V. Borisenko, A. V. Shadrin, G. A. Ovsyannikov,V. A. Luzanov, and F. V. Komissinskii

The film bicrystal Josephson junctions of a new type based on a metal oxide high-Tc superconductor of the YBa2Cu3O7–x (YBCO) system are suggested and studied. In junctions of the new type, in contrast to the known ones, the working surfaces situated on the opposite sides of the bicrystal interface have different crystal orientations: one is (001)YBCO and the other is rotated (misoriented) relative to it by an asymmetric bicrystal angle around a certain axis lying in the substrate plane. The main electrical and dynamic (microwave) characteristics have been determined for junctions of the new type based on NdGaO3 bicrystal substrates with the misorientation angle varying from 13 to 28°. These junctions exhibit high values of the critical parameters at T=77 K, including the critical current density IC=(2–5)×105 A/cm2 and the characteristic voltage VC=ICRN=0.6–0.9 mV. Advantages of the bicrystal Josephson junctions of the new type over the known junctions are considered.

Technical Physics Letters, Vol. 31, No. 3, 2005, pp. 189–192

Paper in PDF-format


Characterization and Dynamics of [100]-Tilted Y-B-C-O Bicrystal Junctions on NdGaO3

Igor V. Borisenko, Iosif M. Kotelyanski, Anton V. Shadrin, Philippe V. Komissinski, and Gennady A. Ovsyannikov

We report on the fabrication technique and electrical properties of Basal Plane Tilted YBa2Cu3O7-x (YBCO) superconducting bicrystal Josephson Junctions (BTJ). In order to form the grain boundary in BTJ we apply an inclination of the (001) YBCO basal planes around the direction of {100} YBCO in contrast to the common In-Plane Tilted bicrystal Josephson Junctions (ITJ) where misorientation of the crystallographic axes in the ab-plane of YBCO has been used. Symmetric and asymmetric junctions were fabricated on bicrystal NdGaO3 substrates 13–28 tilted from (110) NdGaO3. DC and RF properties of the BTJ were investigates at temperatures 4.2–77 K, in magnetic fields up to 100 G, and under influence of electromagnetic radiation of 56 GHz frequency. The experimental dependences of critical current and Shapiro steps from RF current fit the Resistive Shunted model of Josephson junctions (RSJ-model). At T = 77 K the BTJ reveal critical current density jC = 0.2-0.5 MA/cm2 and characteristic voltage VC = ICRN = 0.6-0.9 mV, that makes the junctions promising candidate for practical electronic devices.

IEEE Transactions on Applied Superconductivity, Vol. 15, No. 2, June 2005, p.165-168

Paper in PDF-format


Bandwidth and Noise of SubmillimeterWave Cuprate Bicrystal Josephson Junction Detectors

Gennady A. Ovsyannikov, Igor V. Borisenko, Karen Y. Constantinian, Yulii V. Kislinski, Arsen A. Hakhoumian, Nubar G. Pogosyan, Tigran Zakaryan, Niels F. Pedersen, Jesper Mygind, Nikolaos Uzunoglu, and Evangelia Karagianni

Detectors made from superconducting cuprate YBa2Cu3Ox bicrystal Josephson junctions (BJJs) on sapphire and NdGaO3 substrates have been fabricated and characterized in the frequency band 200–900 GHz. Junctions on sapphire substrates had a normal state resistance RN~15-60 W , and product ICRN up to 2.5 mV at T= 42 K. Junctions on NdGaO3 substrates had lower RN = 1-5 W and ICRN = 04–0.9 mV at = 77K. Three types of detecting devices have been investigated in both the broadband and the frequency-selective detection modes. One type was patterned with log-periodic antenna, and two others with Pt-metal double-slot antenna designed for a central frequency f = 300 GHz and f = 400 GHz, respectively. Measurements at f = 320 GHz of the reception bandwidth df for a device with double-slot antenna gave a quality factor Q = f/df ~ 10. A low-noise cooled 1–2 GHz bandwidth amplifier enables a better sensitivity in the self-pumping frequency mixing mode, avoiding the 1/f noise. The dependence of the spectral density of noise on voltage was compared to the data for the Josephson emission linewidth obtained by the selective detector response method. Also discussed are measurements at 500 GHz of the NEP values carried out at different experimental conditions.

IEEE Transactions on Applied Superconductivity, Vol. 15, No. 2, June 2005, p.533-536

Paper in PDF-format


Superconducting Current in Hybrid Heterojunctions of Metal-Oxide Superconductors: Size and Frequency Dependences

1. Yu.V. Kislinski, F.V. Komissinski, K.Y. Constantinian, G.A. Ovsyannikov, T.Yu. Karminskaya, I.I. Soloviev, V.K. Kornev

We have detected experimentally considerable deviations of the frequency dependences of the Shapiro step amplitudes and the critical current of Nb/Au/YBa2Cu3Ox thin-film hybrid Josephson heterojunctions prepared on YBa2Cu3Ox metal-oxide superconductor films with a tilted c-axis from the regularities inherent in Josephson junctions of traditional superconductors with an s-symmetry of the order parameter. It is shown that possible formation of “splintered” fluxons with a size ls < lJ due to faceting of the interface and formation of a chain of nanosize 0 and p junctions must be taken into account in describing processes in lumped heterojunctions (whose size L is smaller than the Josephson penetration depth lJ determined from the averaged value of the critical current density). For heterojunctions with a size ls < L < lJ, a substantial decrease in the maximal amplitude of the first Shapiro step with increasing voltage (Josephson oscillation frequency) is observed at voltages much smaller than the energy gap in niobium (V < DNb/e); this effect is manifested most strongly when the size L is greater than ls. A fractional Shapiro step and a subharmonic detector response have been observed in the current–voltage characteristics of heterojunctions; the dynamic processes responsible for their emergence and indicating the presence of the second harmonic in the current–phase relation are studied. It is shown that the effect of interface faceting on the current–phase relation increases with a heterojunction size L > ls.

Journal of Experimental and Theoretical Physics, v.11, N 3, p.494-503, 2005

Paper in PDF-format


Growth and Conductivity of Calcium Cuprate films

G.A. Ovsyannikov, S.A. Denisuk, I.K. Bdikin

Physics of Solid State, v.47, N3, p.429-433, 2005


Measerements of noise emission and fano-factor of D/D and D/S Josephson junctions

K. Y. Constantinian, I. Borisenko, P. V. Komissinki, G. A. Ovsyannikov, J. Mygind

Trends in Future Electronics, Bordeaux, May, 2006, p.5


Josephson effect in superconducting constrictions with hybrid SF electrodes: peculiar properties determined by the misorientation of magnetizations

A.V. Zaitsev

JEPT Letters, v.83, p.277-281, 2006

Paper in PDF-format


Microwave Dynamics of Josephson Structures with Nontrivial Current--Phase Relation

G. A. Ovsyannikov, K.Y. Constantinian, Yu.V. Kislinski, P.V. Komossiski, I.V. Borisenko, T.Yu.Karminskaya, V.K. Kornev

Journal of Communications Technology and Electronics, v.51, N9, p.1078-1086, 2006

Paper in PDF-format


Anomalous proximity effect in superconducting oxide structures with antiferromagnetic layer

G.A. Ovsyannikov, I.V. Borisenko, F.V. Komissinski, Yu.V. Kislinskii, A.V. Zaitsev

JEPT Letters, 84, N5, 262-266 (2006)


Conductivity and Antiferromagnetism of CaCuO2 Thin Films Doped by Sr

Gennady A. Ovsyannikova, Viktor V. Demidovb, Yuli V. Kislinskib, Philippe V. Komissinski, Dag Winklera

Physica C, to be published 2006

Paper in PDF-format


Frequency and size dependence of ac Josephson effect in Nb/Au/YBCO heterojunctions

K.Y. Constantinian, Y.V. Kislinski, P.V. Komissinski, I.V. Borisenko1, G.A.Ovsyannikov, T.Y. Karminskaya, I.I. Soloviev, V.K. Kornev, J. Mygind

EUCAS, Journal of Physics: Conference Series v.43 (2006) p.1127–1130

Paper in PDF-format


Dynamics of underdamped Josephson junctions with non-sinusoidal current-phase relation

V.K. Kornev, T.Y. Karminskaya, Y.V. Kislinskii, P.V. Komissinki, K.Y. Constantinian, G.A. Ovsyannikov

Physica C v.435 (2006) p.27–30

Paper in PDF-format


Dynamics of underdamped Josephson junctions with nonsinusoidal current-phase relation

V. K. Kornev, T. Y. Karminskaya, Y.V. Kislinskii, P.V. Komissinki, K.Y. Constantinian, G.A.Ovsyannikov

EUCAS, Journal of Physics: Conference Series v.43 (2006) p.1105–1109

Paper in PDF-format


YBCO/manganite layered structures on NdGaO3 substrates

T Nurgaliev, B Blagoev, T Donchev, S Miteva, P B Mozhaev, J E Mozhaeva, G A Ovsyannikov, I M Kotelyanskii, C Jacobsen

EUCAS, Journal of Physics: Conference Series v.43 (2006) p.329–332

Paper in PDF-format


Nb/Au/YBa2Cu3O7 metal-oxide superconductor heterojunctions

I.V. Borisenko, Y.V. Kislinskii, K.I. Constantinian, G.A. Ovsyannikov, T.Yu. Karminskaya, V.K. Kornev, I.I. Solov`ev, P.V. Komissinski

Surface. X-ray, synchrotron and neutron investigations, No 2, p. 48-54, 2006 (in Russian)

Paper in PDF-format


Anomalous superconducting proximity effect inhybrid oxide heterostructures with antiferromagnetic layer

G.A. Ovsyannikov, P.V. Komissinskiy, I.V. Borisenko, Yu.V. Kislinskii, A.V. Zaitsev, K.Y. Constantinian, D. Winkler

5 Topical Meeting, Thin films for Novel Oxide Devices, Catalunya, Spain, 2007, p.O30


Josephson Effect in Hybrid Oxide Heterostructures with an Antiferromagnetic Layer

P. Komissinskiy, G.A. Ovsyannikov, I.V. Borisenko, Y.V. Kislinskii, K.Y. Constantinian, A.V. Zaitsev, D. Winkler

Phys. Rev. Lett. 99, p.017004-1-017004-4 (2007)

Paper in PDF-format


Conductivity and Antiferromagnetism of CaCuO2 Thin Films Doped by Sr

Ovsyannikov G.A., Demidov V.V., Kislinski Y.V., Komissinski P.V., Winkler D.

Physica С 460-462, p.536-537 (2007)

Paper in PDF-format


Manganite Based magnetic tunnel junction on grain boundary of [100]-tilt type:magnitoresistance and microwave dynamics

I.V. Borisenko, G.A. Ovsyannikov, A.M. Peterzhik, V.A. Shakhunov

Intern conf on Nanoscale Magnetism (ICNM2007), 2007, Istanbul, Turkey, p.153

Paper in PDF-format


Josephson effect in hybrid oxide heterostructures with antiferromagnetic interlayer

G.A. Ovsyannikov, P.V. Komissinskiy, Y.V. Kislinskii, I.V. Borisenko, K.Y. Constantian, A.V. Shadrin

Euro-Asian Symposium Magnetism on a Nanoscale, Kazan, Russia, 2007, Abstract book, p.142


Magnetic field behavior of superconducting heterostructures with antiferromagnetic layer

Y.V. Kiskinskii, I.V. Borisenko, K.Y. Constantinian, P.V. Komissinskiy, G.A. Ovsyannikov, A.V. Shadrin

Euro-Asian Symposium Magnetism on a Nanoscale, Kazan, Russia, 2007, Abstract book, p.165

Paper in PDF-format


Milimeter wave study of hybrid superconducting heterostructures with magnetic active interlayer

Y.V. Kislinskii, K.Y. Constantinian, P.V. Kimissinskii, G.A. Ovsyannikov

The Sixth International Kharkov Symposium on Physics and Engineering of Microwaves, Millimeter and Submillimeter Waves and Workshop on Terahertz Technologies, Kharkov, Ukraine, 2007, p.410-411

Paper in PDF-format


Hybrid Josephson heterostructure with high magnetic field sensitivity

Gennady A. Ovsyannikov, Philipp V. Komissinskiy, Igor B. Borisenko, Yulii V. Kislinskii, Karen Y. Constantinian, Alexandr V. Zaitsev, Dag Winkler

European conference on Applied Superconductivity, Brussels, Belgium, 2007

Paper in PDF-format


Microwave Dynamics and Noise of HTS Serial SQIF

Anton Shadrin, Karen Constantinian, Gennady Ovsyannikov, Victor Kornev, Jesper Mygind

European conference on Applied Superconductivity, Brussels, Belgium, 2007

Paper in PDF-format


Microwave Losses in Ferromagnetic Thin LSMO Films

T. Nurgaliev, V.V. Demidov, A.M. Petrzhik, G.A. Ovsyannikov, S. Miteva, B. Blagoev

preprint

Paper in PDF-format


Magnetoransport Characteristics of Strained La0.7Sr0.3MnO3 Epitaxial Manganite Films

G. A. Ovsyannikov, A. M. Petrzhik, I. V. Borisenko, A. A. Klimov, Yu. A. Ignatov, V. V. Demidov, S. A. Nikitov

JEPT, Vol. 108, No. 1, pp. 48–55 (2009)

Paper in PDF-format


Magnetoresistance and Electrical Conductivity of Manganite Bicrystal Contacts

I.V. Borisenko, G. A. Ovsyannikov

Physics of Solid States, v.51, No2,p.309-313 (2009)

Paper in PDF-format


Hybrid oxide superconducting heterostructure with magnetic interlayer for qubits

G.A. Ovsyannikov, K.Y.Constantinian, Y.V.Kislinski, A.V. Sharin, P.V. Komissinski, A.V.Zaitsev, V.V. Demidov, I.V. Borisenko, D. Winkler

2nd International workshop on Oxide Interfaces, Valbella, Switzerland, April, 2009

Abstact


Magnetotransport in strained epitaxial manganite films

A.M. Petrzhik, G.A. Ovsyannikov, I.V. Borisenko, V.V. Demidov

Conference “Wave Electronics and its Applications in Information and Telecommunication Systems”, St.Petersburg, Russia, May 2009.


Cuprate and manganite interfaces: DC and RF properties

G. A. Ovsyannikov, Y. V. Kislinski, K.Y. Constantinian, A.V. Shadrin, A.V. Zaitsev, P.V.Komissinskiy, V.V. Demidov, I.V. Borisenko, D. Winkler

School on superconductors and functional oxides, Palinuro, Italy, May, 2009


Magnetoresistance and transport properties of manganite-based magnetic junctions on grain boundary of [100]-tilt type

I.V. Borisenko, G.A. Ovsyannikov, A.M. Peterzhik and V.A. Shakhunov

17th International Symposium “NANOSTRUCTURES: Physics and Technology”, Minsk, Belarus, June, 2009.


Hybrid Josephson junctions with s/d wave symmetry of order parameter for elements of quantum computuing systems

Y.V. Kislinskii, K.Y. Constantinian, G.A. Ovsyannikov, A.V. Shadrin, I.V. Borisenko, P.V. Komissinskiy, N.V. Klenov and V.K. Kornev

17th international symposium “Nanostructures: physics and technology”, Minsk, June, 2009

Paper in PDF-format


Nonlinear dynamics of hybrid Josephson junction with an oxide antiferromagnetic interlayer

K.Y. Constantinian, G.A. Ovsyannikov, Y.V. Kislinski, A.V. Shadrin, I.V. Borisenko, P.V. Komissinskiy, J. Mygind, D. Winkler

12 International conference on superconducting electronics, Extended Abstracts, TD-P20, Japan, June, 2009

Paper in PDF-format


Manganite-based magnetic tunnel junctions on grain boundary of [100]-tilt type: Magnetoresistance and transport properties

I.V. Borisenko, G.A. Ovsyannikov

International Conference on Magnetism (ICM'09), Karlsruhe, July, 2009

Paper in PDF-format


Elastic Oscillations Excitation by Ferromagnetic Resonance Method in Thin Manganate Films

A.A. Klimov, S.A. Nikitov, G.A. Ovsyannikov

European congress and exhibition on advanced materials and processes, Glasgow, Scotland, September, 2009


Electron transport and microwave dynamics of hybrid planar Nb/Au/CaSrCuO/YBaCuO Josephson junctions

K.Y. Constantinian, G.A. Ovsyannikov, Y.V. Kislinskii, A.V. Shadrin, I.V. Borisenko, P.V. Komissinskiy, A.V. Zaitsev, J. Mygind, and D. Winkler

European Applied Superconductivity conference, September 2009

Paper in PDF-format


Metaloxide Superconducting Quantum Interference Filters for Microwave Applications

A. V. Shadrin, K. Y. Constantinian, G. A. Ovsyannikov, V. K. Kornev, I. I. Soloviev, S.V. Shitov

Conference "Euroflux 2009", France, September, 2009


Planar Hall Effect in strained epitaxial manganite thin films

I.V. Borisenko

International conference "Functional Materials" (ICFM'09), Partenit, Ukraine, October, 2009


Superconducting current transport in hybrid oxide heterostructure with magnetic interlayer

G.A. Ovsyannikov, K.Y. Constantinian, Y.V. Kislinski, A.V. Shadrin, A.V. Zaitsev, V.V. Demidov, I.V. Borisenko, D. Winkler, P.V. Komissinskiy

16th International Workshop on Oxide Electronics, Tarragona, Spain, October, 2009

Abstract in DOC-format


Superconducting Current in Hybrid Structureswith an Antiferromagnetic Interlayer

A. V. Zaitsev, G. A. Ovsyannikov, K. I. Konstantinyan, Yu. V. Kislinskiі, A. V. Shadrin, I. V. Borisenko, and F. V. Komissinskiі

JEPT, Vol. 110, No. 2, pp. 336–344 (2010)

Paper in PDF-format


Proximity effect and electron transport in the oxide hybrid heterostructures with superconducting/magnetic interfaces

G.A. Ovsyannikov, K.Y. Constantinian, Yu.V. Kislinski, A.V. Shadrin, A.V. Zaitsev , V.V. Demidov, I.V. Borisenko, A.V. Kalabukhov, D. Winkler

arXiv:1001.0963v1

Paper in PDF-format


Spin-dependent current transport in hybrid superconducting oxide heterostructure

G.A. Ovsyannikov, K.Y. Constantinian, Yu.V. Kislinski, A.V. Shadrin, A.V. Zaitsev , V.V. Demidov, I.V. Borisenko, A.V. Kalabukhov, D. Winkler

IV Euro-Asian Symposium “Trends in MAGnetism”:Nanospintronics, Ekaterinburg, Russia, June, 2010


Proximity effect and current transport in the oxide superconductor/magnetic interfaces

G.A. Ovsyannikov, K.Y. Constantinian, Yu.V. Kislinski, A.V. Shadrin, A.V. Zaitsev , V.V. Demidov, P.V. Komissinski, I.V. Borisenko, D. Winkler

International conference on superconductivity and magnetism, Antalya, Turkey, April, 2010


Current transport in hybrid oxide heterostructure with ferromagnetic interlayer

A.M.Petrzhik, G.A.Ovsyannikov, A.V.Shadrin, K.I.Constantinian, Yu.V. Kislinski

Internetional Conference for Young Scientists "Low Temperature Physics", Kharkov, Ukraine, June, 2010

Abstract in DOC-format


Josephson Effect in Heterostructure with Antiferromagnetic Interlayer

K. E. Lahmanski, G. A. Ovsyannikov, Y.V. Kislinski, A.V. Shadrin, K.Y. Constantinian

Internetional Conference for Young Scientists "Low Temperature Physics", Kharkov, Ukraine, June, 2010

Abstract in DOC-format


Electron transport and microwavesdynamics of hybrid heterostructures with superconducting/magnetic interfaces

K.Y. Constantinian, G.A. Ovsyannikov, A.V. Shadrin, Yu.V. Kislinski, A.M. Petrzhik, K.E. Lahmanskiy, J. Mygind, D. Wnkler

International coference Superconductivity and magnetism:hybrid proximity nanostructures and intrinsic phenomena, Paestum, Salerno, Italy, September, 2010

Paper in PDF-format


Effect of resonance microwave irradiation on manganite film conductivity around the ferromagnetic transition

V.A. Atsarkin, V.V. Demidov, L.V. Levkin, and A.M. Petrzhik

Phys. Rev, B82, 144414 1-8 (2010)


Oxide Nanointerface Engineering for Microwave Electronic Devices

K.Y. Constantinian, G.A. Ovsyannikov, A.V. Shadrin, Yu.V. Kislinskii, A.M. Petrzhik, A.V. Zaitsev, J. Mygind, D. Winkler

International Conference “The Technique of Microwave and THz Waves and its Application in Biomedical and Radar Technologies and in Remote Sensing” (IRPhE’2010), Armenia (Ashtarak, Aghveran), September, 2010

Paper in PDF-format


Proximity effect and electron transport in oxide hybrid heterostructures with superconducting/magnetic interfaces

G.A. Ovsyannikov, K.Y. Constantinian, Yu.V. Kislinski, A. V. Shadrin, A.V. Zaitsev, A. M. Petrzhik, V.V. Demidov, I.V. Borisenko, A.V. Kalabukhov and D. Winkler

SST, Vol. 24, p. 055012 (2011)

Paper in PDF-format


Electron Transport in Hybrid Superconductor Heterostructures with Manganite Interlayers

A. M. Petrzhik, G. A. Ovsyannikov, A. V. Shadrin, K. I. Konstantinyan, A. V. Zaitsev, V. V. Demidov, and Yu. V. Kislinskii

JETP, Vol. 112, No. 6, pp. 1042-1050, 2011

Paper in PDF-format


Magnetic Anisotropy of Strained Epitaxial Manganite Films

V. V. Demidov, I. V. Borisenko, A. A. Klimov, G. A. Ovsyannikov, A. M. Petrzhik and S. A. Nikitov

JETP, Vol. 112, No. 5, pp. 825-832, 2011

Paper in PDF-format


Spin-Dependent Electron Transport in Manganite Bicrystal Junctions

A. M. Petrzhik, V. V. Demidov, G. A. Ovsyannikov, I. V. Borisenko and A. V. Shadrin

JETP, Vol. 115, No. 5, pp. 876-884, 2012

Paper in PDF-format


Josephson effect in cuprate superconducting structures

G. A. Ovsyannikov and K. Y. Constantinian

LTP, Vol. 38, No. 4, pp. 333-340, 2012

Paper in PDF-format


Interfaces in Superconducting Hybrid Heterostructures with an Antiferromagnetic Interlayer

K. Y. Constantinian, Yu. V. Kislinskii, G. A. Ovsyannikov, A. V. Shadrin, A. E. Sheyerman, A. L. Vasil’ev, M. Yu. Presnyakov and P. V. Komissinskiy

PSS, Vol. 55, No. 3, pp. 461-465, 2013

Paper in PDF-format


Metal–Insulator Transition in Epitaxial Films of LaMnO3 Manganites Grown by Magnetron Sputtering

I. V. Borisenko, M. A. Karpov and G. A. Ovsyannikov

JTPL, Vol. 39, No. 12, pp. 1027-1030, 2013

Paper in PDF-format


Magnetic anisotropy in strained manganite films and bicrystal junctions

V. V. Demidov, G. A. Ovsyannikov, A. M. Petrzhik, I. V. Borisenko, A. V. Shadrin and R. Gunnarsson

JAP, Vol. 113, No. 16, p. 163909, 2013

Paper in PDF-format


Triplet Superconducting Correlations in Oxide Heterostructures with a Composite Ferromagnetic Interlayer

G. A. Ovsyannikov, A. E. Sheyerman, A. V. Shadrin, Yu. V. Kislinskii, K. Y. Constantinian and A. Kalabukhov

JETP, Vol. 97, No. 3, pp. 145-148, 2013

Paper in PDF-format


Electron Transport in Manganite Bicrystal Junctions

A. M. Petrzhik, G. A. Ovsyannikov, V. V. Demidov, A. V. Shadrin and I. V. Borisenko

PSS, Vol. 55, No. 4, pp. 759-764, 2013

Paper in PDF-format


Metamaterial atom with a multijunction superconducting structure

A.V. Shadrin, S.E. Bankov, G.A. Ovsyannikov and K.Y. Constantinian

SST, Vol. 26, No. 9, p. 094004, 2013

Paper in PDF-format


Spin Transport in Epitaxial Magnetic Manganite/Ruthenate Heterostructures with an LaMnO3 Layer

A. M. Petrzhik, G. A. Ovsyannikov, A. V. Shadrin, Yu. N. Khaidukov and L. Mustafa

JETP, Vol. 119, No. 4, pp. 745-752, 2014

Paper in PDF-format


Hybrid superconducting mesa-heterostructure with manganite-ruthenate interlayer

K.Y. Constantinian, G.A. Ovsyannikov, A.E. Sheyerman, A.V. Shadrin, Y.V. Kislinskii, A. Kalabukhov and D. Winkler

Journal of Physics: Conference Series, Vol. 507, p. 042007, 2014

Paper in PDF-format


Evidence for spin-triplet superconducting correlations in metal-oxide heterostructures with noncollinear magnetization

Yu. N. Khaydukov, G. A. Ovsyannikov, A. E. Sheyerman, K. Y. Constantinian, L. Mustafa, T. Keller, M. A. Uribe-Laverde, Yu. V. Kislinskii, A. V. Shadrin, A. Kalaboukhov, B. Keimer and D. Winkler

Phys. Rev. B, Vol. 90, p. 035130, 2014

Paper in PDF-format


Triplet superconductivity in oxide ferromagnetic interlayer of mesa-structure

G.A. Ovsyannikov, K.Y. Constantinian, A.E. Sheerman, A.V. Shadrin, Yu.V. Kislinski, Yu.N. Khaydukov, L. Mustafa, A. Kalabukhov and D. Winkler

Journal of Physics: Conference Series, Vol. 592, p. 012136, 2015

Paper in PDF-format


Spin-Triplet Electron Transport in Hybrid Superconductor Heterostructures with a Composite Ferromagnetic Interlayer

A. E. Sheyerman, K. Y. Constantinian, G. A. Ovsyannikov, Yu. V. Kislinskii, A. V. Shadrin, A. V. Kalabukhov and Yu. N. Khaydukov

JETP, Vol. 120, No. 6, pp. 1024-1033, 2015

Paper in PDF-format


Copper Oxide Superconducting/Antiferromagnetic Interface

Yulii Kislinskii, Karen Constantinian, Gennady Ovsyannikov, Anton Shadrin, Igor Borisenko, Yuri Khaydukov, Alexander Sheyerman, Aleksandr Vasiliev

SSP, Vol. 233-234, pp. 733-736, 2015

Paper in PDF-format


Structure and Electron Transport of Strontium Iridate Epitaxial Films

Yu. V. Kislinskii, G. A. Ovsyannikov, A. M. Petrzhik, K. Y. Constantinian, N. V. Andreevd and T. A. Sviridova

Physics of the Solid State, Vol. 57, No. 12, pp. 2519-2523, 2015

Paper in PDF-format


Ferromagnetic State of LaMnO3 Interlayer in La0.7Sr0.3MnO3/LaMnO3/SrRuO3 Heterostructures

Andrey M. Petrzhik, Yury N. Khaydukov, Luqman Mustafa, Victor V. Demidov, Gennady A. Ovsyannikov

Solid State Phenomena, Vol. 233-234, pp. 439-442, 2015

Paper in PDF-format


Current-Phase Relation of Superconductor-Ferromagnet-Superconductor Junctions with a Composite Interlayer

Alexander Sheyerman, Gennady Ovsyannikov, Yulii Kislinskii, Karen Constantinian and Anton Shadrin

Solid State Phenomena, Vol. 233-234, pp. 737-740, 2015

Paper in PDF-format


Magnetic Interaction in the Manganite/Intermetallic Compound Heterostructure

I. V. Borisenko, V. V. Demidov, A. A. Klimov, G. A. Ovsyannikov, K. I. Konstantinyan, S. A. Nikitov, V. L. Preobrazhenskii, N. Tiercelin, and P. Pernod

Technical Physics Letters, Vol. 42, No. 2, pp. 113-117, 2016

Paper in PDF-format


Spin-triplet Superconducting Current in Metal-oxide Heterostructures with Composite Ferromagnetic Interlayer

Karén Constantinian, Gennady Ovsyannikov, Alexander Sheyerman, Yulii Kislinskii, Anton Shadrin, Alexei Kalaboukhov, Luqman Mustafa, Yurii Khaydukov, and Dag Winkler

IEEE Transactions on Applied Superconductivity, 2016 to be published

Paper in PDF-format



Papers in English

Papers in Russian

1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  2013  2014  2015  2016

О возможности образования BaCeO3 при осаждении пленок YBa2Cu3O7-x на поверхность оксида церия.

А.Д. Маштаков, И.М. Котелянский, В.А. Лузанов, П.Б. Можаев, Г.А. Овсянников, И.Д. Бдикин

В работе представлены экспериментальные результаты исследования кристаллографических параметров пленочных гетероструктур (1102)Al2O3/(001)CeO2/(001)YBa2Cu3O7-x, полученных методом катодного распыления при высокой температуре T=600-800°C подложки. Показано, что основное ограничение по тем𚣴атуре осаждения пленки YBa2Cu3O7-x на поверхность CeO2 вызвано химичеcким взаимодействием YBa2Cu3O7-x с CeO2 с образованием поликристаллического слоя BaCeO3.

Письма в ЖТФ, 1997, том 23, № 19, стр. 8-13 (1997)

Paper in PDF-format


Особенности двойниковой структуры эпитаксиальных пленок YBa2Cu3O7-x.

И.К. Бдикин, А.Д. Маштаков, П.Б.Можаев, Г.А. Овсянников

Методами рентгеновской дифракции исследованы пленки YBa2Cu3O7-x (YBCO) на NdGaO3 (110) и гетероструктуре (100) CeO2/(1102)Al2O3. Для получения дифракционных спектров от различных кристаллографических плоскостей применялись симметричная, несимметричная и аксиальная геометрии рентгеновского сканирования q и q/2q. Определены ориентационные и количественные характеристики двойникования пленок. При близости кристаллографических параметров этих двух типов пленок (пленки c-ориентированы с c=11.67 A) в структуре двойникования они имеют различия. В частности, особенности структуры NdGaO3 приводят к возникновению угла, отличного от 90° (90.20°), между возможными плоскостями двойникования (110) и (110) в пленке YBCO и различному количеству двойниковых компонент в каждой системе двойников. Из анализа уширения рефлексов, чувствительных к двойникованию, для пленки YBCO на Al2O3 с буферным слоем CeO2 сделан вывод об отсутствии двойникования для 60% пленки.

Физика твердого тела, том 40, № 4, стр. 609-611 (1998)

Paper in PDF-format


Фазовая зависимость сверхпроводящего тока в YBCO джозефсоновских переходах на бикристаллической подложке

Г.А. Овсянников, И.В. Борисенко, К.И. Константинян, А.Д. Маштаков, Е.А. Степанцов

По экспериментальному измерению зависимостей амплитуд гармонических и субгармонических ступенек Шапиро от внешнего монохроматического воздействия изучена ток-фазовая зависимость ВТСП переходов на бикристаллической подложке. Показано, что при симметричном задании транспортного тока через переход с прозрачностью границы порядка D=10-4 и зеркально-симметричной бикристаллической границы ток-фазовая зависимость близка к синусоидальной, что отличается от предсказаний теории и, вероятно, вызвано двойникованием ВТСП пленок электродов, образующих переход. Отклонение от симметрии в задании транспортного тока через переход приводит к отклонению ток-фазовой зависимости от синусоидальной, возрастающей с увеличением степени асимметрии. Данное изменение ток-фазовой зависимости хорошо описывается моделью, учитывающей возникновение связанных андреевских состояний в переходах сверхпроводников с dx2-y2 типом сверхпроводящей волновой функции.

Письма в ЖТФ, том 25, вып. 22, стр. 65-72 (1999)

Paper in PDF-format


Влияние параметров лазерного распыления на ориентацию буферного слоя оксида церия на сапфире и свойства сверхпроводящей пленки YBa2Cu3Ox

П.Б. Можаев, Г.А. Овсянников, Й.Л. Сков

Исследовано влияние параметров лазерного распыления на кристаллические свойства буферных слоев CeO2, выращенных на сапфировой подложке ориентации (1102), и на свойства сверхпроводящих тонких пленок YBa2Cu3Ox. Показано, что в зависимости от условий напыления наблюдается рост ориентаций (100) и (111) CeO2. Изменяя температуру нагревателя, давление в камере и плотность энергии лазерного луча на мишени, удается получить одноориентированный буферный слой желаемой ориентации.

Журнал технической физики, том 69, вып. 2, стр. 119-123 (1999)

Paper in PDF-format


Замещения в катионной подсистеме Nd/Ba в тонких пленках высокотемпературного сверхпроводника NdBa2Cu3Oy.

П.Б. Можаев, Ф.В. Комиссинский, З.Г.Иванов, Г.А. Овсянников

Тонкие пленки высокотемпературного сверхпроводника Nd1+xBa2-xCu3Oy (NBCO) с разным соотношением атомов неодима и бария были получены методом совместного лазерного распыления мишеней с различным элементным составом. Пленки с избытком неодима (x > 0) имели низкую плотность частиц на поверхности и шероховатость, однако критическая температура пленок понижалась с ростом x. Пленки с избыточным барием (x < 0) напротив, демонстрировали независимость сверхпроводниковых свойств от состава осаждаемой пленки, а на поверхности пленок наблюдалось значительное количество частиц. По-видимому, замещение Nd на Ba в тонких пленках NBCO затруднено и избыточный Ba выделяется в частицы (Ba,Cu)Oz. Структура и сверхпроводниковые свойства NBCO демонстрируют сильную зависимость от условий насыщения пленок кислородом.

Физика твердого тела, том 42, вып. 96, стр. 1547-1552 (2000)

Paper in PDF-format


Температурная зависимость электронного транспорта в гетеропереходах нормальный металл-ВТСП.

Ф. В. Комиссинский, Г. А. Овсянников, З. Г. Иванов

ФТТ т. 43, стр. 769 (2001)


Рост и доменная структура пленок YBa2Cu3Ox на подложках галлата неодима с отклонением нормали поверхности от [110] NdGaO3

И.К. Бдикин, П.Б. Можаев, Г.А. Овсянников, Ф.В. Комиссинский, И.М. Котелянский, Е.И. Ракша

ФТТ, т. 43, вып. 9, стр. 1548-1557 (2001)


Высокочастотные электромагнитные взаимодействия в многоэлементных джозефсоновских структурах

В.К. Корнев, И.В. Борисенко, Г.А. Овсянников

Радиотехника и Электроника, 2001, том 46, N9, с. 1029-1047


Андреевские состояния и эффект Джозефсона в гетеропереходах на основе тонких пленок YBCO

Ф.В. Комиссинский, Г.А. Овсянников, Ю.В. Кислинский, И.М. Котелянский, З.Г. Иванов

ЖЭТФ, 95, N6, 1074-1084, 2002


Рост и проводимость эпитаксиальных пленок СаCuO2

Г.А. Овсянников, С.А. Денисюк, И.К. Бдикин, З.Г. Иванов, Т. Клаесон

33-е совещание по физике низких температур, Екатеринбург, 2003, с.183-184


Дробовой шум бикристаллических YBCO джозефсоновских переходов Рост и проводимость эпитаксиальных пленок СаCuO2

К.И. Константинян, Г.А. Овсянников, И.В. Борисенко

33-е совещание по физике низких температур, Екатеринбург, 2003, с.149-150


Фазовые зависимости сверхпроводящего тока в гетеропереходах Nb/Au/YBCO

Ю.В. Кислинский, Г.А. Овсянников, Ф.В. Комиссинский, И.В. Борисенко, З.Г. Иванов

33-е совещание по физике низких температур, Екатеринбург, 2003, с.60-61


Джозефсоновские переходы из купратных сверхпроводников на сапфировых бикристаллических подложках для приема и обработки субмм волн

Г.А. Овсянников, И.В. Борисенко, К.И. Константинян

Радиотехника, 2003, N8, 81-87


Электронный транспорт в металлооксидных сверхпроводниковых гетеропереходах

Ф. В. Комиссинский, К.И. Константинян, Ю. Кислинский, Г. А. Овсянников

Физика низких температур, 2004, т.30, N7/8, с.795-809


Андреевские состояния и дробовой шум бикристаллических переходов из купратных сверхпроводников

И.В. Борисенко, К.И. Константинян, Ю. Кислинский, Г. А. Овсянников

ЖЭТФ 2004, т.99, N6, с.1402-1412


Металлоксидные сверхпроводящие бикристаллические переходы с высокими критическими параметрами

А.В. Шадрин, И.В. Борисенко, Г.А. Овсянников, И.М. Котелянский, Ф.В. Комиссинский

1-ая Международная конференция фундаментальные проблемы высотемпературной сверхпроводимости. Звенигород, 2004


Дисперсия джозефсоновского тока в гибридных гетеропереходах на металлооксидных сверхпроводниках

Ю.В. Кислинский, К.И. Константинян, Г.А. Овсянников,Ф.В. Комиссинский

1-ая Международная конференция фундаментальные проблемы высотемпературной сверхпроводимости. Звенигород, 2004 c.293-294


Сверхпроводящий джозефсоновский детектор ТГц диапазона, работающий при температуре жидкого азота

И.В. Борисенко, Ю.В. Кислинский, К.И. Константинян, , Г.А. Овсянников

1-ая международная конференция по фундаментальным проблемам высотемпературной сверхпроводимости, Звенигород, Россия, 2004


Нетривиальная ток-фазовая зависимость в джозефсоновских переходах из анизотропных сверхпроводников: механизмы и применение

Н.В. Кленов, К. Корнев, И.И. Соловьев, А.В. Шадрин, И.В. Борисенко, К.И. Константинян, Г.А. Овсянников

Нелинейный мир, т.3, N1-2, 75-91, 2005


Рост и проводимость кальциевых купратных пленок

Г.А. Овсянников, С.А. Денисюк, И.К. Бдикин

Физика твердого тела, т. 47, N.3, с.417-421, 2005


Новый тип металлоксидных бикристаллических переходов с высокими критическими параметрами

И. М. Котелянский, И. В. Борисенко, А. В. Шадрин, Г. А. Овсянников, В.А. Лузанов, Ф.В. Комиссинский

Письма в ЖТФ т.31, в.5, с.22, 2005


Джозефсоновские параметры бикристаллических переходов нового типа из металлоксидных сверхпроводников

И. В. Борисенко, А. В. Шадрин, Г. А. Овсянников, И. М. Котелянский, Ф.В. Комиссинский

Письма в ЖТФ т.31, в.8, с.38, 2005


Проводимость и ферромагнетизм допированных Sr эпитаксиальных тонких пленок CaCuO2

Г.А. Овсянников, В.Демидов, Ю.В. Кислинский, Ф.В. Комиссинский

Нанофизика и наноэлектроника, Материалы Х симпозиума, Н-Новгород, т.2, с.277, 2006


Детекторный отклик на воздействие миллиметрового излучения гибридных гетероструктур Nb/Au/YBCO из оксидных сверхпроводников с наноконтактами

Ю.В. Кислинский, Ф.В. Комиссинский, К.И. Константинян, Г.А. Овсянников, И.В. Борисенко, Т.Ю. карминская, В.К. Корнев, Э. Голдобин.

Нанофизика и наноэлектроника, Материалы Х симпозиума, Н-Новгород, т.2, с.166, 2006


Микроволновые динамические параметры джозефсоновских структур с нетривиальной ток-фазовой зависимостью

Г.А. Овсянников, К.И. Константинян, Ю.В. Кислинский, Ф.В. Комиссинский, И.В. Борисенко, Т.Ю. Карминская, В.К. Корнев.

Радиотехника и электроника, т.51, N9, с. 1-9, 2006


Аномальный эффект близости в сверхпроводниковых оксидных структурах с антиферромагнитной прослойкой

Г.А. Овсянников, И.В. Борисенко, Ф.В. Комиссинский, Ю.В. Кислинский, А.В. Зайцев.

Письма в ЖЭТФ, 84, N5, 320-324 (2006)

Paper in PDF-format


Дробовой шум джозефсоновских переходов из оксидных сверхпроводников

И.В. Борисенко, К.И. Константинян, Ф.В. Комиссинский, Г.А. Овсянников

Вторая международная конференция Фундаментальные проблемы высокотемпературной сверхпроводимости ФПС’06, Сборник трудов, Москва ФИАН 2006, 233-234


Наблюдение эффекта Джозефсона в S/AF/D гетероструктурах

Ю.В. Кислинский, И.В. Борисенко, Ф.В. Комиссинский, К.И. Константинян, Г.А. Овсянников

Вторая международная конференция Фундаментальные проблемы высокотемпературной сверхпроводимости ФПС’06, Сборник трудов, Москва ФИАН 2006, 253-256


Аномальный эффект близости в купратных металлоксидных структурах сверхпроводник/антиферромагнетик

И.В. Борисенко, Ф.В. Комиссинский, Г.А. Овсянников, Ю.В. Кислинский, В.И. Демидов

34-е совещание по физике низких температур, Ростов на Дону, т.2 с.228-229, 2006


Квантовые интерференционные фильтры на оксидных сверхпроводниковых переходах для высокочастотных применений

А.В. Шадрин, К.И. Константинян, Г.А. Овсянников

34-е совещание по физике низких температур, Ростов на Дону, т.2 с.236-237, 2006


Дробовой шум джозефсоновских переходов из оксидных сверхпроводников

К.И. Константинян, И.В. Борисенко, Ф.В. Комиссинский, Г.А. Овсянников

34-е совещание по физике низких температур, Ростов на Дону, т.2 с.238-239, 2006


Квантовые интерференционные фильтры на оксидных сверхпроводниковых переходах для высокочастотных применений

А.В. Шадрин, К.И. Константинян, Г.А. Овсянников

Письма в ЖТФ, т.33, вып5, 17-24 (2007)

Paper in PDF-format


Высокочастотные динамические явления в гибридных гетероструктурах на металлоксидных сверхпроводниках

Г.А. Овсянников, Ф.В. Комиссинский, Ю.В. Кислинский, К.И. Константинян, И.В. Борисенко, В.К. Корнев, Д. Винклер

XI Международный Симпозиум Нанофизика и наноэлектроника, Нижний Новгород, Россия, 2007 г. том 1, стр.175-176


Угловые и амплитудные зависимости критического ока в гибридных гетероструктурах с антиферомагнитной прослойкой

Ю.В. Кислинский, Г.А. Овсянников, Ф.В. Комиссинский, И.В. Борисенко, К.И. Константинян

XI Международный Симпозиум Нанофизика и наноэлектроника, Нижний Новгород, Россия, 2007 г. том 1, стр.261-262

Paper in PDF-format


Магнитосопротивление и проводимость туннельных контактов из манганитов на межзеренной границе

И.В. Борисенко, Г.А. Овсянников

Международный симпозиум Структуры со структурным и магнитным упорядочением, Ростов на Дону Россия, 2007


Магнитотранспортные характеристики напряженных эпитаксиальных манганитных пленок La0.7Sr0.3MnO3

Г.А. Овсянников, А.М. Петержик, И.В. Борисенко, А.А. Климов, Ю.А. Игнатов, В.В. Демидов, С.А. Никитов

ЖЭТФ, 135, No. 1, с. 56–64 (2009)

Paper in PDF-format


Магнитосопротивление и проводимость манганитных бикристаллических контактов

И.В. Борисенко , Г.А. Овсянников

ФТТ, т.51,N2, с.292-296 (2009)

Paper in PDF-format


Изменение магнитосопротивления манганита La0.7Sr0.3MnO3, вызванное действием ФМР

А.А Климов, Г.А. Овсянников, А.Л Власюк, В.И. Набатников

58-я научно-техническая конференция МИРЭА, Москва, Май, 2009


Электронная проводимость и магнетизм в напряженных тонких манганитных пленках с сильно коррелированными электронными состояниями

Г.А.Овсянников, В.В. Демидов, А.М. Петржик, И.В. Борисенко

Конференция “Сильно коррелированные электронные системы и квантовые критические явления” г. Троицк, Московской области, Россия, июнь, 2009


Электронная проводимость и магнетизм напряженных тонких манганитных пленок

Г.А. Овсянников, А.М. Петржик, И.В. Борисенко, В.В. Демидов

35-е Совещание по физике низких температур (НТ-35), Черноголовка, Сентябрь 2009


Особенности эффекта близости в структурах сверхпроводник-многослойный ферромагнетик при коллениарной намагниченности в ферромагнитных слоях

А. В. Зайцев

Письма в ЖЭТФ, т. 90, выпуск 6, 521-525 (2009)

Paper in PDF-format


Эффект близости в сверхпроводниковых гетероструктурах с антиферромагнитной прослойкой

Ю.В. Кислинский, И.В. Борисенко, А.В. Зайцев, Ф.В. Комиссинский, К.И. Константинян, Г.А. Овсянников, А.М. Петржик, А.В. Шадрин

VII Национальная конференция «Рентгеновское, синхротронное излучение, нейтроны и электроны, для исследования наносистем и материалов Нано-био-инфо-Когнитивные технологии», Москва, 16-21 ноября 2009

Abstract in DOC-format


Гибридные джозефсоновские контакты с d-волновой симметрией параметра порядка для элементов квантовых вычислительных систем

Ю.В. Кислинский, Г.А. Овсянников, К.И. Константинян, А.В. Шадрин, И.В. Борисенко, Ф.В. Комиссинский, Н.В. Кленов, В.К. Корнев

Радиотехника, N6, 10-15 (2009)

Paper in PDF-format


Сверхпроводящий ток в гибридных структурах с антиферромагнитной прослойкой

А.В. Зайцев, Г.А. Овсянников, К.И. Константинян, Ю.В. Кислинский, А.В. Шадрин, И.В. Борисенко, Ф.В. Комиссинский

ЖЭТФ,137, вып.2, 380-389 (2010)

Paper in PDF-format


Гибридные сверхпроводниковые гетероструктуры с манганитной прослойкой с сильно коррелированными электронными состояниями

Г.А. Овсянников, А.М. Петржик, К.И. Константинян, А.В. Шадрин, Ю.В. Кислинский, А.В. Зайцев,

Конференция “Сильно коррелированные электронные системы и квантовые критические явления”, Троицк, Россия, июнь 2010, с.28

Abstract in DOC-format


Магнитная анизотропия напряжённых эпитаксиальных манганитных плёнок

В.В. Демидов, И.В. Борисенко, А.А. Климов, Г.А. Овсянников, А.М. Петржик, С.А. Никитов

ЖЭТФ, Т. 139, вып. 5 стр. 943-951, 2011

Paper in PDF-format


Электронный транспорт в гибридных сверхпроводниковых гетероструктурах с манганитной прослойкой

А.М. Петржик, Г.А. Овсянников, А.В. Шадрин, К.И. Константинян, А.В.Зайцев, В.В. Демидов, Ю.В. Кислинский

ЖЭТФ, Т. 139, вып.5, стр. 1-9, 2011

Paper in PDF-format


Эффект Джозефсона в купратных сверхпроводниковых структурах

Г.А. Овсянников, К.И. Константинян

ФНТ, Т. 38, вып. 4, стр. 423-433, 2012

Paper in PDF-format


Спин-зависимый электронный транспорт в манганитных бикристаллических контактах

А.М. Петржик, В.В. Демидов, Г.А. Овсянников, И.В. Борисенко, А.В. Шадрин

ЖЭТФ, Т. 142, вып. 5, стр. 994, 2012

Paper in PDF-format


Частотноперестраиваемый элемент метаматериалов на основе многоэлементных сверхпроводниковых структур

А.В. Шадрин, С.Е. Банков , Г.А. Овсянников, К.И. Константинян, И.И. Соловьев

Радиотехника, вып. 12, стр. 49-56, 2012


Переход металл-изолятор в эпитаксиальных пленках манганитов LaMnO3, выращенных магнетронным распылением

И.В. Борисенко, М.А. Карпов, Г.А. Овсянников

Письма в ЖТФ, Т. 39, вып. 23, стр. 1-7, 2013

Paper in PDF-format


Границы раздела в сверхпроводниковых гибридных гетероструктурах с антиферромагнитной прослойкой

К.И. Константинян, Ю.В. Кислинский, Г.А. Овсянников, А.В. Шадрин,А.Е. Шейерман, А.Л. Васильев, М.Ю. Пресняков, Ф.В. Комиссинский

Физика твердого тела, Т. 55, вып. 3, стр. 417-421, 2013

Paper in PDF-format


Триплетные сверхпроводящие корреляции в оксидных гетероструктурах с композитной ферромагнитной прослойкой

Г.А. Овсянников, A.E. Шейерман, А.В. Шадрин, Ю.В. Кислинский, К.И. Константинян, А. Калабухов

Письма в ЖЭТФ, Т. 97, стр. 165-169, 2013

Paper in PDF-format


Электронный транспорт в манганитных бикристаллические контактах

А.М. Петржик, Г.А. Овсянников, В.В. Демидов, А.В. Шадрин, И.В. Борисенко

Физика твердого тела, Т. 55, вып. 4, стр. 697-701, 2013

Paper in PDF-format


Динамика сверхпроводящего тока в гибридных гетероструктурах с композитной ферромагнитной прослойкой

А.Е. Шейерман, Ю.В. Кислинский, А.В. Шадрин, Г.А. Овсянников, К.И. Константинян

Нелинейный мир, Т. 11, вып. 2, стр. 100-101, 2013


Влияние кристаллической симметрии на переход металл-изолятор в эпитаксиальных пленках LaMnO3

М.А. Карпов, И.В. Борисенко, Г.А. Овсянников

Нелинейный мир, Т. 11, вып. 2, стр. 136-137, 2013


Магнитные бикристаллические переходы в плёнках La0.7Sr0.3MnO3

А.М. Петржик, Г.А. Овсянников

Нелинейный мир, Т. 2, вып.12, стр. 26-27, 2014


Спиновый транспорт в эпитаксиальных магнитных гетероструктурах манганит/рутенат с прослойкой LaMnO3

А.М. Петржик, Г.А. Овсянников, А.В. Шадрин, Ю.Н. Хайдуков, Л. Мустафа

ЖЭТФ, Т. 146, вып.4(10), стр. 844-853, 2014

Paper in PDF-format


Спин-триплетный электронный транспорт в гибридных сверхпроводниковых гетероструктурах с композитной ферромагнитной прослойкой

А.Е. Шейерман, К.И. Константинян, Г.А. Овсянников, Ю.В. Кислинский, А.В. Шадрин, А.В. Калабухов, Ю.Н. Хайдуков

ЖЭТФ, Т. 147, вып. 6, стр. 1185-1195, 2015

Paper in PDF-format


Магнитное взаимодействие в гетероструктуре манганит/интерметаллид

И.В. Борисенко, В.В. Демидов, А.А. Климов, Г.А. Овсянников, К.И. Константинян, С.А. Никитов, В.Л. Преображенский, N. Tiercelin, P. Pernod

Письма в ЖТФ, Т. 42, вып. 3, стр. 1-10, 2016

Paper in PDF-format


Магнитный эффект близости на границе купртаного сверхпроводника с оксидным спиновым клапаном

Г.А. Овсянников, В.В. Демидов, Ю.Н. Хайдуков, Л. Мустафа, К.И. Константинян, А.В. Калабухов, Д. Винклер

ЖЭТФ, Т. 149, вып. 4, стр. 852-863, 2016

Paper in PDF-format