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arXiv · 1003.5154

Thermal conductance of a proximity superconductor

J. T. Peltonen·P. Virtanen·M. Meschke·J. V. Koski·T. T. Heikkilä·J. P. Pekola
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Abstract

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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J. T. Peltonen, P. Virtanen, M. Meschke, J. V. Koski, T. T. Heikkilä, J. P. Pekola. 2010-03-26. Thermal conductance of a proximity superconductor. https://doi.org/10.1103/physrevlett.105.097004

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