Igor Batov

09/1992 - 07/2000: Research Scientist, Institute of Solid State Physics, Russian Academy of Sciences.
07/2000 - 11/2003: Senior Research Scientist, Institute of Solid State Physics, Russian Academy of Sciences;
04/2001 - 06/2004: Research Scientist, Institute of Thin Films and Interfaces, ISG-1,Research Centre Juelich, Germany
09/2004 - 11/2005: Research Scientist, Institute of Physics, Abt. III, University of Erlangen-Nuernberg, Germany;
02/2006 - present, Senior Research Scientist, Institute of Solid State Physics, Russian Academy of Sciences

EDUCATION

Moscow Institute of Physics and Technology (State University); Post-graduate school at the Institute of Solid State Physics RAS.
Ph.D. in Physics, Institute of Solid State Physics RAS

RESEARCH, TEACHING, or OTHER INTERESTS

Condensed Matter Physics

Scopus Publications

Nonequilibrium Phenomena in Planar Mesoscopic Josephson SNS Structures Based on Superconducting Nb
I. S. Lakunov, S. V. Egorov, E. D. Mukhanova, I. E. Batov, T. E. Golikova, et al.
JETP Letters, 2023
Controllable supercurrent in mesoscopic superconductor-normal metal-ferromagnet crosslike Josephson structures
T E Golikova, M J Wolf, D Beckmann, G A Penzyakov, I E Batov, et al.
Superconductor Science and Technology, 2021
A nonmonotonic dependence of the critical Josephson supercurrent on the injection current through a normal metal/ferromagnet weak link from a single domain ferromagnetic strip has been observed experimentally in nanofabricated planar crosslike S-N/F-S Josephson structures. This behavior is explained by 0–π and π–0 transitions, which can be caused by the suppression and Zeeman splitting of the induced superconductivity due to interaction between N and F layers, and the injection of spin-polarized current into the weak link. A model considering both effects has been developed. It shows the qualitative agreement between the experimental results and the theoretical model in terms of spectral supercurrent-carrying density of states of S-N/F-S structures and the spin-dependent double-step nonequilibrium quasiparticle distribution.
Determination of the Current–Phase Relation in Josephson Junctions by Means of an Asymmetric Two-Junction SQUID
L. V. Ginzburg, I. E. Batov, V. V. Bol’ginov, S. V. Egorov, V. I. Chichkov, et al.
JETP Letters, 2018
Proximity effect and interface transparency in Al/InAs-nanowire/Al diffusive junctions
A V Bubis, A O Denisov, S U Piatrusha, I E Batov, V S Khrapai, et al.
Semiconductor Science and Technology, 2017
We investigate the proximity effect in InAs nanowire (NW) junctions with superconducting contacts made of Al. The carrier density in InAs is tuned by means of the back gate voltage Vg. At high positive Vg the devices feature transport signatures characteristic of diffusive junctions with highly transparent interfaces—sizable excess current, re-entrant resistance effect and proximity gap values ( Δ N ) close to the Al gap ( Δ 0 ). At decreasing Vg, we observe a reduction of the proximity gap down to Δ N ≈ Δ 0 / 2 at NW conductances ∼ 2 e 2 h − 1 , which is interpreted in terms of carrier density dependent reduction of the Al/InAs interface transparency. We demonstrate that the experimental behavior of Δ N is closely reproduced by a model with rectangular potential barrier at the Al/InAs interface.
Magnetoresistance oscillations in MBE-grown Sb2Te3 thin films
C. Weyrich, T. Merzenich, J. Kampmeier, I. E. Batov, G. Mussler, et al.
Applied Physics Letters, 2017
We report on the Shubnikov–de Haas oscillations in the longitudinal resistance of thin films of three-dimensional topological insulator Sb2Te3 grown by means of molecular beam epitaxy. The oscillations persist up to the temperatures of 30 K, and the measurements at various tilt angles reveal that they originate from a two-dimensional system. Using a top gate, we further study the change of oscillation amplitude and frequency, which in combination with the standard Hall measurements suggest the origin of oscillations to be at the interface between the film and the Si substrate.
Growth, characterization, and transport properties of ternary (Bi1-xSbx)2Te3 topological insulator layers
C Weyrich, M Drögeler, J Kampmeier, M Eschbach, G Mussler, et al.
Journal of Physics Condensed Matter, 2016
Ternary (Bi1−xSbx)2Te3 films with an Sb content between 0 and 100% were deposited on a Si(1 1 1) substrate by means of molecular beam epitaxy. X-ray diffraction measurements confirm single crystal growth in all cases. The Sb content is determined by x-ray photoelectron spectroscopy. Consistent values of the Sb content are obtained from Raman spectroscopy. Scanning Raman spectroscopy reveals that the (Bi1−xSbx)2Te3 layers with an intermediate Sb content show spatial composition inhomogeneities. The observed spectra broadening in angular-resolved photoemission spectroscopy (ARPES) is also attributed to this phenomena. Upon increasing the Sb content from x = 0 to 1 the ARPES measurements show a shift of the Fermi level from the conduction band to the valence band. This shift is also confirmed by corresponding magnetotransport measurements where the conductance changes from n- to p-type. In this transition region, an increase of the resistivity is found, indicating a location of the Fermi level within the band gap region. More detailed measurements in the transition region reveals that the transport takes place in two independent channels. By means of a gate electrode the transport can be changed from n- to p-type, thus allowing a tuning of the Fermi level within the topologically protected surface states.
Anomalous superconducting proximity effect and coherent charge transport in semiconducting thin film with spin-orbit interaction
A. V. Burmistrova, I. A. Devyatov, I. E. Batov
Epl, 2016
We present a microscopic theory of the superconducting proximity effect in a semiconducting thin film with a spin-orbit interaction in an external magnetic field. We demonstrate that an effective 1D Hamiltonian which describes induced superconductivity in NSO in contact with a usual s-wave superconductor possesses not only a spin-singlet induced superconducting order parameter term, as commonly adopted, but also a spin triplet order parameter term. Using this new effective Hamiltonian we confirm previous results for a normal current across contacts of NSO with a normal metal and for a Josephson current with the same NSO with induced superconductivity, obtained previously in the framework of the phenomenological Hamiltonian without spin-triplet terms. However, a calculated current-phase relation across the transparent contact between NSO with induced superconductivity in magnetic field and a usual s-wave superconductor differs significantly from previous results. We suggest the experiment which can confirm our theoretical predictions.
Crossover from josephson effect to single interface andreev reflection in asymmetric superconductor/nanowire junctions
H. Y. Günel, N. Borgwardt, I. E. Batov, H. Hardtdegen, K. Sladek, et al.
Nano Letters, 2014
We report on the fabrication and characterization of symmetric nanowire-based Josephson junctions, that is, Al- and Nb-based junctions, and asymmetric junctions employing superconducting Al and Nb. In the symmetric junctions, a clear and pronounced Josephson supercurrent is observed. These samples also show clear signatures of subharmonic gap structures. At zero magnetic field, a Josephson coupling is found for the asymmetric Al/InAs-nanowire/Nb junctions as well. By applying a magnetic field above the critical field of Al or by raising the temperature above the critical temperature of Al the junction can be switched to an effective single-interface superconductor/nanowire structure. In this regime, a pronounced zero-bias conductance peak due to reflectionless tunneling has been observed.
Nonlocal supercurrent in mesoscopic multiterminal SNS Josephson junction in the low-temperature limit
T. E. Golikova, M. J. Wolf, D. Beckmann, I. E. Batov, I. V. Bobkova, et al.
Physical Review B Condensed Matter and Materials Physics, 2014
Nonlocal supercurrent was observed in mesoscopic planar SNS Josephson junction with additional normal metal electrodes when nonequilibrium quasiparticles were injected from the normal metal electrode in one of the superconducting banks of the Josephson junction in the absence of net transport current through the junction. We claim that the effect observed is due to a supercurrent counterflow appearing to compensate the quasiparticle flow in the SNS weak link. We have measured SNS junction response for different distances from the quasiparticle injector to the SNS junction at temperatures far below the superconducting transition temperature. The charge-imbalance relaxation length was estimated by using modified Kadin, Smith and Skocpol scheme in the case of planar geometry. The model developed allows to describe the interplay of the charge imbalance and Josephson effects in the nanoscale proximity system in detail.
Critical current in planar SNS Josephson junctions
T. E. Golikova, F. Hübler, D. Beckmann, N. V. Klenov, S. V. Bakurskiy, et al.
JETP Letters, 2013
The absence of Fraunhofer patterns in narrow Nb/InAs-nanowire/Nb junctions
H. Yusuf Günel, Igor E. Batov, Hilde Hardtdegen, Kamil Sladek, Andreas Winden, et al.
Aip Conference Proceedings, 2013
Double proximity effect in hybrid planar superconductor-(normal metal/ferromagnet)-superconductor structures
T. E. Golikova, F. Hübler, D. Beckmann, I. E. Batov, T. Yu. Karminskaya, et al.
Physical Review B Condensed Matter and Materials Physics, 2012
Supercurrent in Nb/InAs-nanowire/Nb Josephson junctions
H. Y. Günel, I. E. Batov, H. Hardtdegen, K. Sladek, A. Winden, et al.
Journal of Applied Physics, 2012
Nanocrystalline Pd alloy films coated by electroless deposition
G. V. Strukov, G. K. Strukova, I. E. Batov, M. K. Sakharov, E. A. Kudrenko, et al.
Journal of Nanoscience and Nanotechnology, 2011
Josephson supercurrent in Nb/InN-nanowire/Nb junctions
R. Frielinghaus, I. E. Batov, M. Weides, H. Kohlstedt, R. Calarco, et al.
Applied Physics Letters, 2010
Studies of nanocrystalline Pd alloy films coated by electroless deposition
G.K. Strukova, G.V. Strukov, I.E. Batov, M.K. Sakharov, E.A. Kudrenko, et al.
Materials Chemistry and Physics, 2010
Electronic transport in mesoscopic superconductor/2D electron gas junctions in strong magnetic field
I. E. Batov, Th. Schaepers, N. M. Chtchelkatchev, A. A. Golubov, H. Hardtdegen, et al.
Bulletin of the Russian Academy of Sciences Physics, 2009
Josephson tunnel junctions with a strong ferromagnetic interlayer
A. A. Bannykh, J. Pfeiffer, V. S. Stolyarov, I. E. Batov, V. V. Ryazanov, et al.
Physical Review B Condensed Matter and Materials Physics, 2009
Detection of 0.5 THz radiation from Bi2Sr2CaCu2O8 single crystals using a superconducting integrated receiver
Proceedings of the Eighteenth International Symposium on Space Terahertz Technology 2007 Isstt 2007, 2007
Andreev reflection and strongly enhanced magnetoresistance oscillations in Gax In1-x As InP heterostructures with superconducting contacts
Igor E. Batov, Thomas Schäpers, Nikolai M. Chtchelkatchev, Hilde Hardtdegen, Alexey V. Ustinov
Physical Review B Condensed Matter and Materials Physics, 2007
Temperature and frequency dependence of complex conductance of ultrathin YBa2Cu3O7-x films: Observation of vortex-antivortex pair unbinding
V. A. Gasparov, G. E. Tsydynzhapov, I. E. Batov, Qi Li
Aip Conference Proceedings, 2006
Detection of 0.5 THz radiation from intrinsic Bi2Sr 2CaCu2O8 Josephson junctions
I. E. Batov, X. Y. Jin, S. V. Shitov, Y. Koval, P. Müller, et al.
Applied Physics Letters, 2006
Temperature and frequency dependence of complex conductance of ultrathin YBa2Cu3O7−x films: Observation of vortex-antivortex pair unbinding
V. A. Gasparov, G. E. Tsydynzhapov, I. E. Batov, Qi Li
Journal of Low Temperature Physics, 2005
Temperature and frequency dependence of complex conductance of ultrathin YBa2Cu3O7- x films: Observation of vortex-antivortex pair unbinding
V.A. Gasparov, G.E. Tsydynzhapov, I.E. Batov, Qi Li
Journal of Low Temperature Physics, 2005
Andreev reflection and enhanced subgap conductance in NbN/Au/InGaAs-InP Junctions
I. E. Batov, Th. Schäpers, A. A. Golubov, A. V. Ustinov
Journal of Applied Physics, 2004
On the superconducting and magnetic properties of HoNbO3-δ and EuNbO3-δ complex oxides
G.K. Strukova, D.V. Shovkun, V.N. Zverev, I.E. Batov, S.A. Zver'kov, et al.
Physica C Superconductivity and Its Applications, 2001
Frequency and temperature dependence of complex conductance of ultrathin YBa2Cu3O7-x films: A study of vortex-antivortex pair unbinding
V Gasparov
Physica B Condensed Matter, 2000
Interaction between surface acoustic waves and resonant tunneling structures in GaAs
V. I. Talyanskii, A. B. Hutchinson, I. E. Batov, D. A. Ritchie, E. H. Linfield
Journal of Applied Physics, 1999
On the synthesis and the electric and magnetic properties of superconducting barium-niobium-oxide compounds
G.K Strukova, V.V Kedrov, V.N Zverev, S.S Khasanov, I.M Ovchinnikov, et al.
Physica C Superconductivity and Its Applications, 1997
Observation of berezinski-kosterhtz-thouless transition in Pr0.6Y0.4Ba2Cu3O7-x/Y1Ba2Cu3O7-x/Pr0.6Y0.4Ba2Cu3O7-x, trilayers
Vitali A. Gasparov, Igor E. Batov, Qi Li, Chuhee Kwon
Czechoslovak Journal of Physics, 1996
Observation of Berezinski-Kosterlitz-Thouless transition in PrYBaCuO/YBaCuO/PrYBaCuO trilayers
Vitali A. Gasparov, I. E. Batov, Qi Li, Chuhe Kwon
Proceedings of SPIE the International Society for Optical Engineering, 1996
Edge magnetoplasmons in the quantum Hall effect regime
V.K. Talyanskii, M. Wassermeier, A. Wixforth, J. Oshinowo, J.P. Kotthaus, et al.
Surface Science, 1990
High-frequency conductivity of a 2D electron channel of the GaAs/AlGaAs heterostructure in the QHE regime
I.E. Batov, A.V. Polisskii, M.I. Reznikov, V.I. Tal'yanskii
Solid State Communications, 1990
Low temperature LEED and electric conductivity measurements for cleaved Si(111) surfaces
V.Yu. Aristov, I.E. Batov, V.A. Grazhulis
Surface Science, 1983

Publications

Scopus Author ID : 56078621300

GRANT DETAILS

- Russian Foundation for Basic Research (RFBR) project N 20-02-00864 “Study of coherent transport and nonlocal nonequilibrium effects in hybrid systems based on superconductors, ferromagnets, and semiconductor nanostructures”, 2020-2022
Principal Investigator
- Russian Foundation for Basic Research (RFBR) project N 17-02-00933 “Magnetotransport and electronic coherence effects in hybrid systems based on superconductors, ferromagnets and semiconductor nanostructures”, 2017-2019,
Principal Investigator
- Russian Foundation for Basic Research (RFBR) project N 14-02-01041 “Сoherent electronic transport in hybrid systems based on superconductors, ferromagnets and semiconductor nanostructures”, 2014-2017,
Principal Investigator
- Russian Foundation for Basic Research project N 17-02-01270 “Distributed Josephson structures including pi-junctions with ferromagnetic barrier”, 2017-2019,
- Ministry of Education and Science of the Russian Federation, Project N 14Y.26.31.0007 “Topological quantum phenomena in superconducting hybrid structures”, 2014-2018,
- Russian Science Foundation, Project N 14-12-01290, “Coherent transport investigation in nanostructures for superconducting electronics and spintronics devices”, 2014-2016

RESEARCH OUTPUTS (PATENTS, SOFTWARE, PUBLICATIONS, PRODUCTS)

1. C. Weyrich, T. Merzenich, J. Kampmeier, I.E. Batov, G. Mussler, J. Schubert, D. Gruetzmacher, Th. Schaepers, "Magnetoresistance oscillations in MBE-grown Sb2Te3 thin films",
Appl. Phys. Lett., v. 110, Iss. 9, p. 092104, 2017
DOI: 10.1063/1.4977848
2. A.V. Bubis, A.O. Denisov, S.U. Piatrusha, I.E. Batov, V.S. Khrapai, J. Becker, J. Treu, D. Ruhstorfer, G. Koblmüller, “Proximity effect and interface transparency in Al/InAs-nanowire/Al diffusive junctions”
Semicond. Sci. Technol., v.32, N 9, p. 094007, 2017
DOI: 10.1088/1361-6641/aa7eef
3. L.V. Ginzburg, I.E. Batov, V.V. Bol’ginov, S.V. Egorov, V.I. Chichkov, A.E. Shchegolev, N.V. Klenov, I.I. Soloviev, S.V. Bakurskiy, M.Yu. Kupriyanov, “Determination of the Current-Phase Relation in Josephson Junctions by Means of an Asymmetric Two-Junction SQUID”
JETP Letters, v. 107, Iss. 1, pp. 48-54, 2018
DOI: 10.1134/S0021364018010058
4. T.E. Golikova, M.J. Wolf, D. Beckmann, G.A. Penzyakov, I.E. Batov, I.V. Bobkova, A.M. Bobkov, V.V. Ryazanov,
“Controllable supercurrent in mesoscopic superconductor-normal metal-ferromagnet crosslike Josephson structures”
Supercond. Sci. Technol., vol. 34, N 9, p. 095001, 2021
DOI: 10.1088/1361-6668/abfd0d