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Thermopower induced by a supercurrent in superconductor-normal-metal structures.

Authors
  • Virtanen, Pauli
  • Heikkilä, Tero T
Type
Published Article
Journal
Physical review letters
Publication Date
Apr 30, 2004
Volume
92
Issue
17
Pages
177004–177004
Identifiers
PMID: 15169185
Source
Medline
License
Unknown

Abstract

We examine the thermopower Q of a mesoscopic normal-metal (N) wire in contact with superconducting (S) segments and show that even with electron-hole symmetry Q may become finite due to the presence of supercurrents. Moreover, we show how the dominant part of Q can be directly related to the equilibrium supercurrents in the structure. In general, a finite thermopower appears both between the N reservoirs and the superconductors and between the N reservoirs themselves. The latter, however, strongly depends on the geometrical symmetry of the structure.

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