Nonmetallic thermal transport in low-dimensional proximity structures with partially preserved time-reversal symmetry in a magnetic field

Tkachov, Grigory (2005) Nonmetallic thermal transport in low-dimensional proximity structures with partially preserved time-reversal symmetry in a magnetic field. PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 417 (3-4). pp. 127-140. ISSN 0921-4534,

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Abstract

Gapped excitation spectra of Andreev states in one- and two-dimensional normal systems in contacts with superconductors are analyzed in the presence of a parallel magnetic field. It is shown that in the ballistic regime there is a specific interplay between magnetic field spin splitting and the effect of a proximity-induced screening supercurrent which preserves time-reversal symmetry for certain groups of Andreev states. In this case the thermal conductance of the system remains suppressed well below the normal-state value in a rather wide range of magnetic fields approaching the critical fields of the superconductor. (C) 2004 Elsevier B.V. All rights reserved.

Item Type: Article
Uncontrolled Keywords: SUPERCONDUCTOR-SEMICONDUCTOR JUNCTIONS; ANDREEV CONDUCTANCE; QUANTUM TRANSPORT; EXCESS CURRENT; METAL; CONDUCTIVITY; BILLIARDS; CONTACTS; SYSTEMS; REFLECTION; proximity effect; Andreev reflection; low-dimensional systems; thermal conductance
Subjects: 500 Science > 530 Physics
Divisions: Physics > Institute of Theroretical Physics
Depositing User: Dr. Gernot Deinzer
Date Deposited: 18 Jun 2021 12:52
Last Modified: 18 Jun 2021 12:52
URI: https://pred.uni-regensburg.de/id/eprint/36804

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