Thermal conductance by the inverse proximity effects in a superconductor

Joonas Peltonen; Pauli Virtanen; Matthias Meschke; J.V. Koski; Tero Heikkilä; Jukka Pekola

doi:10.1103/PhysRevLett.105.097004

Thermal conductance by the inverse proximity effects in a superconductor

Joonas Peltonen, Pauli Virtanen, Matthias Meschke, J.V. Koski, Tero Heikkilä, Jukka Pekola

Department of Applied Physics

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Abstract

We study heat transport in hybrid lateral normal-metal–superconductor–normal-metal structures. We find the thermal conductance of a short superconducting wire to be strongly enhanced beyond the BCS value due to the inverse proximity effect, resulting from contributions of elastic cotunneling and crossed Andreev reflection of quasiparticles. Our measurements agree with a model based on the quasiclassical theory of inhomogeneous superconductivity in the diffusive limit.

Original language	English
Article number	097004
Pages (from-to)	1-4
Number of pages	4
Journal	Physical Review Letters
Volume	105
Issue number	9
DOIs	https://doi.org/10.1103/PhysRevLett.105.097004
Publication status	Published - 27 Aug 2010
MoE publication type	A1 Journal article-refereed

Keywords

Proximity Superconductor
superconductor

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PhysRevLett.105.097004Final published version, 651 KB

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abstract = "We study heat transport in hybrid lateral normal-metal–superconductor–normal-metal structures. We find the thermal conductance of a short superconducting wire to be strongly enhanced beyond the BCS value due to the inverse proximity effect, resulting from contributions of elastic cotunneling and crossed Andreev reflection of quasiparticles. Our measurements agree with a model based on the quasiclassical theory of inhomogeneous superconductivity in the diffusive limit.",

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AU - Virtanen, Pauli

AU - Meschke, Matthias

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AU - Heikkilä, Tero

AU - Pekola, Jukka

PY - 2010/8/27

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AB - We study heat transport in hybrid lateral normal-metal–superconductor–normal-metal structures. We find the thermal conductance of a short superconducting wire to be strongly enhanced beyond the BCS value due to the inverse proximity effect, resulting from contributions of elastic cotunneling and crossed Andreev reflection of quasiparticles. Our measurements agree with a model based on the quasiclassical theory of inhomogeneous superconductivity in the diffusive limit.

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KW - superconductor

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Thermal conductance by the inverse proximity effects in a superconductor

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Keywords

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