We study the peculiarities in current-phase relations (CPR) of the SIsFS junction in the region of 0 to π transition. These CPR consist of two independent branches corresponding to 0- and π-states of the contact. We have found that depending on the transparency of the SIs tunnel barrier, the decrease in the s-layer thickness leads to transformation of the CPR shape going in the two possible ways: either one of the branches exists only in discrete intervals of the phase difference φ or both branches are sinusoidal but differ in the magnitude of their critical currents. We demonstrate that the difference can be as large as 10% under maintaining superconductivity in the s layer. An applicability of these phenomena for memory and logic application is discussed.
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20 August 2018
Research Article|
August 21 2018
Protected 0-π states in SIsFS junctions for Josephson memory and logic
S. V. Bakurskiy;
S. V. Bakurskiy
1
Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University 1(2)
, Leninskie Gory, Moscow 119234, Russian Federation
2
Moscow Institute of Physics and Technology
, Dolgoprudny, Moscow Region 141700, Russian Federation
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N. V. Klenov
;
N. V. Klenov
1
Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University 1(2)
, Leninskie Gory, Moscow 119234, Russian Federation
2
Moscow Institute of Physics and Technology
, Dolgoprudny, Moscow Region 141700, Russian Federation
3
Faculty of Physics, M.V. Lomonosov Moscow State University
, Leninskie Gory, 119992 Moscow, Russia
4
All-Russian Research Institute of Automatics n.a. N.L. Dukhov (VNIIA)
, 127055 Moscow, Russia
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I. I. Soloviev;
I. I. Soloviev
1
Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University 1(2)
, Leninskie Gory, Moscow 119234, Russian Federation
2
Moscow Institute of Physics and Technology
, Dolgoprudny, Moscow Region 141700, Russian Federation
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N. G. Pugach;
N. G. Pugach
1
Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University 1(2)
, Leninskie Gory, Moscow 119234, Russian Federation
5
National Research University Higher School of Economics
, 101000 Moscow, Russia
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M. Yu. Kupriyanov;
M. Yu. Kupriyanov
1
Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University 1(2)
, Leninskie Gory, Moscow 119234, Russian Federation
2
Moscow Institute of Physics and Technology
, Dolgoprudny, Moscow Region 141700, Russian Federation
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A. A. Golubov
A. A. Golubov
a)
2
Moscow Institute of Physics and Technology
, Dolgoprudny, Moscow Region 141700, Russian Federation
6
Faculty of Science and Technology and MESA+ Institute for Nanotechnology, University of Twente
, 7500 AE Enschede, The Netherlands
a)Author to whom correspondence should be addressed: [email protected]
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a)Author to whom correspondence should be addressed: [email protected]
Appl. Phys. Lett. 113, 082602 (2018)
Article history
Received:
June 20 2018
Accepted:
August 03 2018
Citation
S. V. Bakurskiy, N. V. Klenov, I. I. Soloviev, N. G. Pugach, M. Yu. Kupriyanov, A. A. Golubov; Protected 0-π states in SIsFS junctions for Josephson memory and logic. Appl. Phys. Lett. 20 August 2018; 113 (8): 082602. https://doi.org/10.1063/1.5045490
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