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Fizika Tverdogo Tela, 2020, Volume 62, Issue 9, Pages 1385–1389
DOI: https://doi.org/10.21883/FTT.2020.09.49758.03H
(Mi ftt8306)
 

XXIV International Symposium Nanophysics and Nanoelectronics, Nizhny Novgorod, March 10-13, 2020
Superconductivity

Resonant current steps in Josephson structures with a layer from a material with strong spin–orbit interaction

K. Y. Constantiniana, G. A. Ovsyannikova, A. M. Petrzhika, A. V. Shadrinab, Yu. V. Kislinskiia, G. Cristianic, G. Logvenovc

a Kotel'nikov Institute of Radio Engineering and Electronics, Russian Academy of Sciences, Moscow
b Moscow Institute of Physics and Technology, Dolgoprudny, Moscow Region
c Max Planck Institute for Solid State Research, Stuttgart, Germany
Abstract: The microwave and magnetic parameters of Josephson Nb/Au/Sr$_{2}$IrO$_{4}$/YBa$_{2}$Cu$_{3}$O$_{x}$ mesastructures with a layer of Sr$_{2}$IrO$_{4}$, a material representing a Mott antiferromagnetic insulator with a high spin–orbit interaction energy $E_{\mathrm{SO}}\sim$ 0.4 eV, were studied. Shapiro steps, oscillating with radiation power, appeared under monochromatic electromagnetic radiation confirm the Josephson properties of these structures. In the presence of a weak magnetic field $H<$ 15 Oe, the voltage–current characteristics (VCCs) had resonant current steps at voltages $V_{n}$, which were inversely proportional to the size $L$ of structures in plane. Polarity reversal in the electrical current $I$ led to asymmetry in the arrangement of resonant current steps. At a specified magnetic field $H$, the voltage $V_{n}$ remained constant, and the amplitudes of resonant current steps nonmonotonically changed.
Keywords: Josephson structure, spin-orbit interaction, strontium iridate, Fiske steps.
Funding agency Grant number
Russian Foundation for Basic Research 19-07-00274
This work was performed within the state task and supported in part by the Russian Foundation for Basic Research (project no. 19-07-00274).
Received: 26.03.2020
Revised: 26.03.2020
Accepted: 02.04.2020
English version:
Physics of the Solid State, 2020, Volume 62, Issue 9, Pages 1549–1553
DOI: https://doi.org/10.1134/S1063783420090152
Bibliographic databases:
Document Type: Article
Language: Russian
Citation: K. Y. Constantinian, G. A. Ovsyannikov, A. M. Petrzhik, A. V. Shadrin, Yu. V. Kislinskii, G. Cristiani, G. Logvenov, “Resonant current steps in Josephson structures with a layer from a material with strong spin–orbit interaction”, Fizika Tverdogo Tela, 62:9 (2020), 1385–1389; Phys. Solid State, 62:9 (2020), 1549–1553
Citation in format AMSBIB
\Bibitem{ConOvsPet20}
\by K.~Y.~Constantinian, G.~A.~Ovsyannikov, A.~M.~Petrzhik, A.~V.~Shadrin, Yu.~V.~Kislinskii, G.~Cristiani, G.~Logvenov
\paper Resonant current steps in Josephson structures with a layer from a material with strong spin–orbit interaction
\jour Fizika Tverdogo Tela
\yr 2020
\vol 62
\issue 9
\pages 1385--1389
\mathnet{http://mi.mathnet.ru/ftt8306}
\crossref{https://doi.org/10.21883/FTT.2020.09.49758.03H}
\elib{https://elibrary.ru/item.asp?id=44154218}
\transl
\jour Phys. Solid State
\yr 2020
\vol 62
\issue 9
\pages 1549--1553
\crossref{https://doi.org/10.1134/S1063783420090152}
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