Thermoelectric effects in superconducting proximity structures

Details Thermoelectric effects in superconducting proximity structures Thermoelectric effects in superconducting proximity structures

2007-06-15

arxiv.org/abs/0706.2306v1

Appl. Phys. A 89, 625 (2007)

Physics

Condensed Matter

Superconductivity

14 pages, 10 figures. 374th WE-Heraus seminar: Spin physics of superconducting heterostructures, Bad Honnef, 2006

Scientific paper

10.1007/s00339-007-4189-0

Attaching a superconductor in good contact with a normal metal makes rise to a proximity effect where the superconducting correlations leak into the normal metal. An additional contact close to the first one makes it possible to carry a supercurrent through the metal. Forcing this supercurrent flow along with an additional quasiparticle current from one or many normal-metal reservoirs makes rise to many interesting effects. The supercurrent can be used to tune the local energy distribution function of the electrons. This mechanism also leads to finite thermoelectric effects even in the presence of electron-hole symmetry. Here we review these effects and discuss to which extent the existing observations of thermoelectric effects in metallic samples can be explained through the use of the dirty-limit quasiclassical theory.

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