Email this article Determination of the Current–Phase Relation in Josephson Junctions by Means of an Asymmetric Two-Junction SQUID
- Authors: Ginzburg L.V.1,2, Batov I.E.1,2, Bol’ginov V.V.2,3, Egorov S.V.2, Chichkov V.I.4, Shchegolev A.E.5,6,3, Klenov N.V.1,5,6,3,7, Soloviev I.I.1,3,7, Bakurskiy S.V.1,3, Kupriyanov M.Y.1,3
-
Affiliations:
- Moscow Institute of Physics and Technology (State University)
- Institute of Solid State Physics
- Skobeltsyn Institute of Nuclear Physics
- National University of Science and Technology MISiS
- Faculty of Physics
- Moscow Technical University of Communications and Informatics
- Moscow Technological University (MIREA)
- Issue: Vol 107, No 1 (2018)
- Pages: 48-54
- Section: Condensed Matter
- URL: https://journals.rcsi.science/0021-3640/article/view/160826
- DOI: https://doi.org/10.1134/S0021364018010058
- ID: 160826
Cite item
Open Access
Access granted
Subscription Access
Abstract
An analytical approach that makes it possible to reconstruct the current–phase relation (CPR) in Josephson structures included in one of the arms of a two-junction superconducting quantum interference device (SQUID), where the second junction has a significantly higher critical current and a known (sinusoidal) CPR, has been developed. The developed methods of analytical and numerical studies of current–flow transformations in two-junction SQUIDs make it possible to reconstruct the CPR of a junction with a low critical current taking into account both the existence of the self-inductance of the interferometer contour and a possible asymmetry in the supply current system. The efficiency of this approach has been confirmed by the experimental study of niobium–aluminum/aluminum oxide–niobium test structures with the known CPR.
About the authors
L. V. Ginzburg
Moscow Institute of Physics and Technology (State University); Institute of Solid State Physics
Email: nvklenov@gmail.com
Russian Federation, Dolgoprudnyi, Moscow region, 141700; Chernogolovka, Moscow region, 142432
I. E. Batov
Moscow Institute of Physics and Technology (State University); Institute of Solid State Physics
Email: nvklenov@gmail.com
Russian Federation, Dolgoprudnyi, Moscow region, 141700; Chernogolovka, Moscow region, 142432
V. V. Bol’ginov
Institute of Solid State Physics; Skobeltsyn Institute of Nuclear Physics
Email: nvklenov@gmail.com
Russian Federation, Chernogolovka, Moscow region, 142432; Moscow, 119991
S. V. Egorov
Institute of Solid State Physics
Email: nvklenov@gmail.com
Russian Federation, Chernogolovka, Moscow region, 142432
V. I. Chichkov
National University of Science and Technology MISiS
Email: nvklenov@gmail.com
Russian Federation, Moscow, 119049
A. E. Shchegolev
Faculty of Physics; Moscow Technical University of Communications and Informatics; Skobeltsyn Institute of Nuclear Physics
Email: nvklenov@gmail.com
Russian Federation, Moscow, 119991; Moscow, 111024; Moscow, 119991
N. V. Klenov
Moscow Institute of Physics and Technology (State University); Faculty of Physics; Moscow Technical University of Communications and Informatics; Skobeltsyn Institute of Nuclear Physics; Moscow Technological University (MIREA)
Author for correspondence.
Email: nvklenov@gmail.com
Russian Federation, Dolgoprudnyi, Moscow region, 141700; Moscow, 119991; Moscow, 111024; Moscow, 119991; Moscow, 119454
I. I. Soloviev
Moscow Institute of Physics and Technology (State University); Skobeltsyn Institute of Nuclear Physics; Moscow Technological University (MIREA)
Email: nvklenov@gmail.com
Russian Federation, Dolgoprudnyi, Moscow region, 141700; Moscow, 119991; Moscow, 119454
S. V. Bakurskiy
Moscow Institute of Physics and Technology (State University); Skobeltsyn Institute of Nuclear Physics
Email: nvklenov@gmail.com
Russian Federation, Dolgoprudnyi, Moscow region, 141700; Moscow, 119991
M. Yu. Kupriyanov
Moscow Institute of Physics and Technology (State University); Skobeltsyn Institute of Nuclear Physics
Email: nvklenov@gmail.com
Russian Federation, Dolgoprudnyi, Moscow region, 141700; Moscow, 119991
Supplementary files
