Thermoelectric effects in normal metal/superconductor interface structures

J. Eom, C. J. Chien, V. Chandrasekhar

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

The thermopower of Andreev interferometers, which are doubly connected loops in which one arm is a superconductor and one arm is a normal metal, oscillates as a function of magnetic field with a fundamental period corresponding to a flux quantum h/2e through the area of the loop. While the magnetoresistance of an Andreev interferometer is symmetric with respect to the magnetic field, the thermopower can be either symmetric or antisymmetric, depending on the topology of the sample. The temperature dependence of the thermopower oscillations is nonmonotonic. This nonmonotonic behavior does not appear to be related to the reentrance observed by many groups in the conductance of normal-metal/superconductor (NS) structures.

Original languageEnglish (US)
Pages (from-to)733-743
Number of pages11
JournalSuperlattices and Microstructures
Volume25
Issue number5
DOIs
StatePublished - May 1999

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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