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ON THE MICROSCOPIC APPROACH TO THE ANDREEV CURRENT...
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ON THE MICROSCOPIC APPROACH TO THE ANDREEV CURRENT...
Annotation
PII
S0044451024070058-1
Publication type
Article
Status
Published
Authors
P. I. Arseev 
Affiliation: P.N. Lebedev Physical Institute of the Russian Academy of Sciences
M. V. Kozlova
Affiliation: P.N. Lebedev Physical Institute of the Russian Academy of Sciences
Edition
Volume 166 Issue number 1
Pages
38-44
Abstract
It was shown how we can describe microscopically the Andreev current in a uniform way for a contact with direct coupling between N and S leads and with intermediate chain of atoms (multilayer system) inside the contact. Considering various types of connection of the normal lead to external thermal bath we reproduce various nonequilibrium distributions at the edge of the normal lead. It was shown what type of connection to the external reservoir corresponds to the classical result of Blonder,Klapwijk and Tinkham. Also we discuss difference in equilibrium and non equilibrium proximity effect, and it is clarified that the Andreev current arises due to the nonequilibrium effects which is much larger than the equilibrium one. Contribution for the JETP special issue in honor of P. L. Kapitza’s 130th anniversary
Acknowledgment
The authors thank for support grant RSF 23-22-00289.
Received
13.08.2024
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References

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