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arXiv · 1709.03472

Quasiparticle entropy in superconductor/normal metal/superconductor proximity junctions in the diffusive limit

Pauli Virtanen·Francesco Vischi·Elia Strambini·Matteo Carrega·Francesco Giazotto
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Abstract

We discuss the quasiparticle entropy and heat capacity of a dirty superconductor-normal metal-superconductor junction. In the case of short junctions, the inverse proximity effect extending in the superconducting banks plays a crucial role in determining the thermodynamic quantities. In this case, commonly used approximations can violate thermodynamic relations between supercurrent and quasiparticle entropy. We provide analytical and numerical results as a function of different geometrical parameters. Quantitative estimates for the heat capacity can be relevant for the design of caloritronic devices or radiation sensor applications.

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Pauli Virtanen, Francesco Vischi, Elia Strambini, Matteo Carrega, Francesco Giazotto. 2017-09-11. Quasiparticle entropy in superconductor/normal metal/superconductor proximity junctions in the diffusive limit. https://doi.org/10.1103/physrevb.96.245311

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