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Papers in English
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).
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)
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)
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)
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).
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)
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)
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).
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).
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).
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).
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)
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)
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)
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).
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)
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)
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)
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)
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)
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).
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).
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)
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)
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).
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.
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.
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
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
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
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
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
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
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
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
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
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
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
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
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)
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)
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)
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
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
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
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
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
Microwave Losses in Ferromagnetic Thin LSMO Films
T. Nurgaliev, V.V. Demidov, A.M. Petrzhik, G.A. Ovsyannikov, S. Miteva, B.
Blagoev
preprint
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)
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)
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
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
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
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
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
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
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)
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
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
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
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
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
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)
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
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
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
Josephson effect in cuprate superconducting structures
G. A. Ovsyannikov and K. Y. Constantinian
LTP, Vol. 38, No. 4, pp. 333-340, 2012
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
Magentic interaction at the interface of epitaxial manganite film and intermetallic superlattice
A.S. Grishin, G.A. Ovsyannikov, A.A. Klimov , V.V. Demidov, K.Y. Constantinian, I.V. Borisenko, V.L. Preobrazhensky, N. Tiercelin, P.Pernod.
Journal of Electronic Materials, 2017 to be published
Papers in Russian
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 тематуре 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)
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)
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)
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)
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)
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)
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)
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
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)
Магнитосопротивление и проводимость манганитных бикристаллических контактов
И.В. Борисенко , Г.А. Овсянников
ФТТ, т.51,N2, с.292-296 (2009)
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)
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
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)
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)
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
Магнитная анизотропия напряженных эпитаксиальных манганитных пленок
В.В. Демидов, И.В. Борисенко, А.А. Климов, Г.А. Овсянников, А.М. Петржик, С.А. Никитов.
ЖЭТФ, 139, вып.4, стр. 943-951, 2011
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, 139, вып.5, стр. 1-9, 2011
Эффект Джозефсона в купратных сверхпроводниковых структурах
Г.А. Овсянников, К.И. Константинян.
ФНТ, том 38, вып. 4, стр. 423-433, 2012
Спин-зависимый электронный транспорт в манганитных бикристаллических контактах
А.М. Петржик, В.В. Демидов, Г.А. Овсянников, И.В. Борисенко, А.В. Шадрин.
ЖЭТФ 142, вып. 5, стр. 994, 2012
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, 39, вып. 23, стр. 1-7, 2013
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
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
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
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. 12. вып 2. стр. 26-27, 2014
Спиновый транспорт в эпитакксиальных магнитных гетероструктурах манганит/рутенат с прослойкой из 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
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
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
Магнитный эффект близости на границе купратного сверхпроводника с оксидным спиновым клапаном
Г.А. Овсянников, В.В. Демидов, Ю.Н. Хайдуков, Л. Мустафа, К.И. Константинян, А. Калабухов, Д. Винклер
ЖЭТФ, т. 149, вып. 4, стр. 852-863, 2016
Магнитный эффект близости и сверхпроводящие триплетные корреляции на границе купратного сверхпроводника и оксидного спинового клапана
Г.А. Овсянников, К.И. Константинян, В.В. Демидов, Ю.Н. Хайдуков.
ФНТ, том 42, вып. 10, стр. 883-890, 2016
Магнитосопротивление в гетероструктуре манганит/интерметаллид
29. А.С. Гришин, А.А. Климов, Г.А. Овсянников, А.М. Петржик, В.Л. Преображенский, N. Tiercelin, P. Pernod.
Нелинейный мир, т. 15, вып. 2, стр. 45-48, 2017
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