Thermal conductance of a proximity superconductor

Details Thermal conductance of a proximity superconductor Thermal conductance of a proximity superconductor

2010-03-26

arxiv.org/abs/1003.5154v1

Physics

Condensed Matter

Superconductivity

4+ pages, 3 figures

Scientific paper

We study heat transport in hybrid normal metal - superconductor - normal metal (NSN) structures. We find the thermal conductance of a short superconducting wire to be strongly enhanced beyond the BCS value due to inverse proximity effect. The measurements agree with a model based on the quasiclassical theory of superconductivity in the diffusive limit. We determine a crossover temperature below which quasiparticle heat conduction dominates over the electron-phonon relaxation.

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