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arXiv · 1909.09554

Thermodynamics of a phase-driven proximity Josephson junction

Francesco Vischi·Matteo Carrega·Alessandro Braggio·Pauli Virtanen·Francesco Giazotto
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Abstract

We study the thermodynamic properties of a superconductor/normal metal/superconductor Josephson junction {in the short limit}. Owing to the proximity effect, such a junction constitutes a thermodynamic system where {phase difference}, supercurrent, temperature and entropy are thermodynamical variables connected by equations of state. These allow conceiving quasi-static processes that we characterize in terms of heat and work exchanged. Finally, we combine such processes to construct a Josephson-based Otto and Stirling cycles. We study the related performance in both engine and refrigerator operating mode.

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Francesco Vischi, Matteo Carrega, Alessandro Braggio, Pauli Virtanen, Francesco Giazotto. 2019-10-15. Thermodynamics of a phase-driven proximity Josephson junction. https://doi.org/10.3390/e21101005

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