• Development of superconducting structures with unique electromagnetic characteristics and the study of their physical properties...

Valery Ryazanov

рязановChief researcher of the lab, D.Sc. in Physics and Mathematics

Professor of Moscow Institute of Physics and Technology

Head of the lab of superconductivity in the Institute of Solid State Physics RAS in Chernogolovka

Member of two dissertation Councils, member of the editorial Board of the scientific journal “Letters to Jounal of Experimental and Theoretical Physics” (JETP Letters)

e-mail: ryazanov@issp.ac.ru

Phone: +7 496 522 25 74

Area of Expertise: Nanotechnology, nanophysics, nanoelectronics, superconducting nanoelectronics, Josephson effects, superconducting qubits.

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Prof. Ryazanov and PhD Ben Hamida Aymen

Major Scientific Advances:

Superconductor-ferromagnet-superconductor (SFS) Josephson junctions:

First experimental observation of superconducting current flow through a ferromagnet in a Josephson SFS junction (1999); experimental realization of the π-state in SFS systems (2000-2001); detection (in phase-sensitive experiments) of the inverse current-phase relation, spontaneous currents and magnetic flux in superconducting curcuits with π-junctions (2002-2008), realization of a novel type of Josephson magnetic switch (2012-2013).

Reviews:

– Ryazanov et al “Superconductor-ferromagnet-superconductor π-junctions” J. Low Temp. Phys. 136, 385 (2004);

– Ryazanov et al “Superconducting currents through a ferromagnet. Phase inversion in structures with Josephson π-junctions” Physics-Uspekhi 47, 732 (2004);

– V. Ryazanov. “Physics and Applications of Superconducting Phase Inverters Based on Superconductor-Ferromagnet-Superconductor Josephson Junctions”. In: Series on NanoScience and Technology. Vol. “Fundamentals of Superconducting Nanoelectronics”, Chapter 8. Ed. A.Sidorenko. Springer. pp. 219-248 (2011).

Superconductor-normal metal (SN) junctions and multilayers:

Detection of dimensional crossovers and intrinsic Josephson effect in artificial multilayered superconducting (SN) structures (1994); observation of effects of nonequilibrium quasiparticle flow on Josephson SNS junctions (1885-1987); observation of the thermoelectric (and acoustoelectric) analogues of Josephson effects, “Josephson Seebeck and Nernst effects” (1981-1991).

Review:

– Kaplunenko V.K., Logvenov G.Yu., Ryazanov V.V., and Schmidt V.V. “Effect of heat, acoustical and nonequilibrium quasiparticle flows on Josephson SNS junctions.” In: Series on Progress in High Temperature Superconductivity. Vol.4. “Weak superconductivity” Ed. A.Barone, A.Larkin. World Scientific., p.305 (1987).

Research Projects and Contracts (2003 – 2014):

Head over 15 projects of the Russian Foundation for Basic Research, about 10 projects of the Russian Academy of Sciences, two projects of the Ministry of Education and Science, International projects INTAS, CRDF.

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Valery in the clean room of the laboratory

Grants of Russian Foundation for Basic Research

1) 04-02-16799-а Josephson π-junctions and new physics of a networks with π-junctions (2004-2006)

2) 04-02-08159 (OFI) Josephson π-junctions for digital and quantum logics (2004-2005)

3) 06-02-72025-(MNTI_a) Interplay of Superconductivity and Ferromagnetism in Submicron-scale Hybrid Structures (2006-2008)

4) 07-02-00966-а Investigations of structures with Josephson SFS π-junctions  (2007-2009).

5) 08-02-90108-(Mol_a) Investigation of pinning force and the possibility of critical temperature and critical current enhancement for MgB2 (2008-2009)

6) 08-02-91965-(NNIO_a) Experimental investigation of quantum coherence in Josephson circuits with SFS π-junctions (2008-2010)

7) 10-02-00895-а Investigations of Josephson media with π-junctions (2010 – 2012).

8) 13-02-00908-а Superconducting structures with junctions based on superconductors and ferromagnets (2013-2015)

Grants of Russian Academy of Sciences

1) Program “Spintronics”, Grant: Experimental investigations of spin-dependent phenomena in ferromagnet-superconductor thin-film structures (2003-2008).

2) Program “Spintronics”, Grant: Spin-splitting effects in hybrid nanostructures (2013-2014).

3) Program “Strongly Correlated Electrons”, Grants: Experimental investigations of interference and interface phenomena in multilayered structures and arrays (2003-2012).

4) Program “Quantum macrophysics”, Section “Fundamentals of quantum calculations and communications”,  Grants: Investigations of self-frustrated Josephson arrays for quantum coherent state realization (2003-2012).

Grants of Russian Ministry of Education and Sciences

OLYMPUS DIGITAL CAMERA

Members of Defense of Thesis Committee in the Leyden University

1) State contract with Federal Agency on Science and Innovations N 02.740.11.5017

“Fabrication and characterization of superconducting quantum logics elements” (2009-2010)

2) Agreement with Russian Ministry of Education and Sciences N 8638

“Development of physical principles of superconducting quantum logics devices with π -junction use” (2012-2013)

Grants CRDF (U.S. CIVILIAN RESEARCH & DEVELOPMENT FOUNDATION, Cooperative Grants Program)

1) RP1-2413-CG-02  Josephson π-Junctions and New Physics of Superconducting Structures Including π-Junctions (2002-2004)

2) RUP1-2691-CG-05 Josephson π-junctions: New Physics and Potential Applications in Digital and Quantum Computing (2006-2008)

Referee, Review:

Review:

– Feigel’man M.V., Ryazanov V.V., Timofeev V.B. – Chernogolovka 2000: Mesoscopic and strongly correlated electron systems – The current state of quantum mesoscopics,  Physics-Uspekhi 44, 1045 (2001).

– Kaplunenko V.K., Logvenov G.Yu., Ryazanov V.V., and Schmidt V.V. “Effect of heat, acoustical and nonequilibrium quasiparticle flows on Josephson SNS junctions.” In: Series on Progress in High Temperature Superconductivity. Vol.4. “Weak superconductivity” Ed. A.Barone, A.Larkin. World Scientific., p.305 (1987).

– Ryazanov V.V., V.A. Oboznov, A.S. Prokofiev, V.V. Bolginov, and A.K.Feofanov.  “Superconductor-ferromagnet-superconductor π-junctions” J. Low Temp. Phys. 136, 385 (2004);

– Ryazanov V.V., V.A. Oboznov, V.V. Bol’ginov, A.S. Prokof’ev, A.K. Feofanov.  “Superconducting currents through a ferromagnet. Phase inversion in structures with Josephson π-junctions” Physics-Uspekhi 47, 732 (2004);

– V. Ryazanov. “Physics and Applications of Superconducting Phase Inverters Based on Superconductor-Ferromagnet-Superconductor Josephson Junctions”. In: Series on NanoScience and Technology. Vol. “Fundamentals of Superconducting Nanoelectronics”, Chapter 8. Ed. A.Sidorenko. Springer. pp. 219-248 (2011).

Referee in the following scientific journals: Nature Physics, Phys. Rev. B, Phys. Rev. Lett., JETP Lett., Appl. Phys. Lett., Physica C, Europhysics Letters, JETP and others as well.

Member of Editorial Board of JETP Letters (Journal)

Chairman of the panel “Low Temperature Physics” by the Russian Foundation for Basic Research (RFBR).

Work as an expert on projects and programs RFBR, Ministry of Education and Science of the Russian Federation, INTAS, etc.

Scientific Recognition: 

1987 г.: The All-Union Award for Young Scientists (Leninski Komsomol prize).

Publications

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Regional Seas in the Netherlands (2004)

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Skiing in Austria (2013)

рязанов докладывает

Lecture of postdocs (2015)