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This article is cited in 3 scientific papers (total in 3 papers)
XXIII International Symposium ''Nanophysics and Nanoelectronics'', Nizhny Novgorod, March 11--14, 2019
Superconductivity
The proximity and Josephson effects in niobium nitride–aluminum bilayers
M. Yu. Levicheva, A. I. Elkinaa, N. N. Bukharovb, Yu. V. Petrovc, A. Yu. Aladyshkinad, D. Yu. Vodolazova, A. M. Klushina a Institute for Physics of Microstructures, Russian Academy of Sciences, Nizhnii Novgorod
b Nizhny Novgorod Research and Production Association named after M. V. Frunze
c Saint Petersburg State University
d Lobachevsky State University of Nizhny Novgorod
Abstract:
Highly disordered thin films of niobium nitride and the specific features of the proximity effect in NbN (S)–aluminum (N) bilayers with a large resistivity ratio, $\rho_{\mathrm{NbN}}/\rho_{\mathrm{Al}}\gg1$, are studied. It is shown that magnetic screening and the critical current Ic of such SN structures significantly increase compared to the S layer. The observed effect is associated with the induced superconductivity in the N layer due to the proximity effect. The Josephson effect is demonstrated in NbN/Al–NbN–NbN/Al variable thickness bridges made of such SN bilayers.
Keywords:
Josephson junctions, proximity effect, thin films.
Received: 15.04.2019 Revised: 22.04.2019 Accepted: 24.04.2019
Citation:
M. Yu. Levichev, A. I. Elkina, N. N. Bukharov, Yu. V. Petrov, A. Yu. Aladyshkin, D. Yu. Vodolazov, A. M. Klushin, “The proximity and Josephson effects in niobium nitride–aluminum bilayers”, Fizika Tverdogo Tela, 61:9 (2019), 1594–1598; Phys. Solid State, 61:9 (2019), 1544–1548
Linking options:
https://www.mathnet.ru/eng/ftt8693 https://www.mathnet.ru/eng/ftt/v61/i9/p1594
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