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Fizika Tverdogo Tela, 2020, Volume 62, Issue 9, Pages 1370–1374
DOI: https://doi.org/10.21883/FTT.2020.09.49755.31H (Mi ftt8303) 		 
This article is cited in 2 scientific papers (total in 2 papers)

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

Parameters of the tunneling barrier of niobium – based superconducting structures

M. E. Paramonov, L. V. Filippenko, P. N. Dmitriev, M. Yu. Fominskii, A. B. Ermakov, V. P. Koshelets

Kotel'nikov Institute of Radio Engineering and Electronics, Russian Academy of Sciences, Moscow
Full-text PDF (159 kB) Citations (2)
DOI: https://doi.org/10.21883/FTT.2020.09.49755.31H
Abstract: The main parameters of the tunneling barrier of the Josephson junctions Nb/AlO$_{x}$/Nb and Nb/AlN/Nb were estimated using the Simmons method in a wide range of current densities. The dependences of the height and width of the tunnel barrier on the resistivity for each type of junctions are experimentally determined. A decrease in the height of the AlN tunnel barrier by 0.3 eV, compared with the oxide one, makes it possible to obtain junctions with a current density above 15 kA/cm$^{2}$ at a technologically achievable insulation layer of the order of 10 Angstroms, which makes it possible to realize the quality parameter $R_{j}/R_{n}$ not lower than 25.
Keywords: superconductivity, superconducting tunnel junction, tunnel barrier parameters, Simmons method, terahertz-range receivers.
Funding agency Grant number
Russian Science Foundation 19-19-00618
Ministry of Education and Science of the Russian Federation
This work was supported by the Russian Scientific Foundation, project no. 19-19-00618. The tunnel junctions were fabricated at the V. Kotel’nikov Institute of Radio Engineering and Electronics of the Russian Academy of Sciences, the state task using UNU 352529.
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 1534–1538
DOI: https://doi.org/10.1134/S1063783420090231
Bibliographic databases:
Document Type: Article
Language: Russian
Citation: M. E. Paramonov, L. V. Filippenko, P. N. Dmitriev, M. Yu. Fominskii, A. B. Ermakov, V. P. Koshelets, “Parameters of the tunneling barrier of niobium – based superconducting structures”, Fizika Tverdogo Tela, 62:9 (2020), 1370–1374; Phys. Solid State, 62:9 (2020), 1534–1538
Citation in format AMSBIB
\Bibitem{ParFilDmi20}
\by M.~E.~Paramonov, L.~V.~Filippenko, P.~N.~Dmitriev, M.~Yu.~Fominskii, A.~B.~Ermakov, V.~P.~Koshelets
\paper Parameters of the tunneling barrier of niobium -- based superconducting structures
\jour Fizika Tverdogo Tela
\yr 2020
\vol 62
\issue 9
\pages 1370--1374
\mathnet{http://mi.mathnet.ru/ftt8303}
\crossref{https://doi.org/10.21883/FTT.2020.09.49755.31H}
\elib{https://elibrary.ru/item.asp?id=44154215}
\transl
\jour Phys. Solid State
\yr 2020
\vol 62
\issue 9
\pages 1534--1538
\crossref{https://doi.org/10.1134/S1063783420090231}
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    • This publication is cited in the following 2 articles:
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