Abstract
This study is devoted to the investigation of tunneling superconductor–insulator–superconductor (SIS) Josephson junctions with a new type of shunt based on an additional superconductor–insulator–normal metal (SIN) junction placed around the SIS junction. In the course of study, the parameters of such shunted junctions are numerically calculated and their current–voltage characteristics (IVC) are simulated. The designed structures are assembled in real samples and their parameters are studied; the IVC of junctions with different degrees of shunting are measured, and the behavior of these junctions under the influence of high-frequency signals in the subterahertz range is studied.
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Funding
This study was supported by the Russian Science Foundation (project no. 20-42-04415). Tunnel junctions were made within the framework of State assignment in the Kotel’nikov Institute of Radio Engineering, Russian Academy of Sciences. To prepare samples, the equipment of enterprise USU #352529 Cryointegral was used, the development of which was supported by a grant from the Ministry of National Defense of Russian Federation (agreement no. 075-15-2021-667).
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Translated by O. Kadkin
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Shevchenko, M.S., Filippenko, L.V., Kiselev, O.S. et al. Josephson Tunnel Junctions with an Integral Superconductor–Insulator–Normal Metal Shunt. Phys. Solid State 64, 278–282 (2022). https://doi.org/10.1134/S1063783422060075
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DOI: https://doi.org/10.1134/S1063783422060075