Phase-Coherent Thermoelectricity in Superconducting Hybrids (Brief Review)

We review some recent advances in studies of phase-coherent thermoelectric effects in superconducting hybrid structures such as, e.g., Andreev interferometers. We elucidate a number of mechanisms of electron–hole symmetry breaking in such systems causing dramatic enhancement of thermoelectric effect...

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Bibliographic Details
Published in:JETP letters 2021-11, Vol.114 (10), p.593-608
Main Authors: Kalenkov, M. S., Zaikin, A. D.
Format: Article
Language:English
Subjects:
Atomic
Biological and Medical Physics
Biophysics
Broken symmetry
Condensed Matter
Hybrid structures
Interferometers
Magnetic flux
Molecular
Optical and Plasma Physics
Particle and Nuclear Physics
Physics
Physics and Astronomy
Quantum Information Technology
Solid State Physics
Spintronics
Superconductivity
Thermoelectricity
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Summary:We review some recent advances in studies of phase-coherent thermoelectric effects in superconducting hybrid structures such as, e.g., Andreev interferometers. We elucidate a number of mechanisms of electron–hole symmetry breaking in such systems causing dramatic enhancement of thermoelectric effects. We demonstrate that the flux-dependent thermopower exhibits periodic dependence on the applied magnetic flux which in some limits may reduce to either odd or even functions of in accordance with experimental observations. We also show that dc Josephson current in Andreev interferometers can be controlled and enhanced by applying a temperature gradient which may also cause a nontrivial current-phase relation and a transition to a π-junction state.
ISSN:0021-3640
1090-6487
DOI:10.1134/S0021364021220021