A1 Journal article (refereed)
Thermodynamics of a Phase-Driven Proximity Josephson Junction (2019)

Vischi, F., Carrega, M., Braggio, A., Virtanen, P., & Giazotto, F. (2019). Thermodynamics of a Phase-Driven Proximity Josephson Junction. Entropy, 21(10), Article 1005. https://doi.org/10.3390/e21101005

JYU authors or editors

Publication details

All authors or editors: Vischi, Francesco; Carrega, Matteo; Braggio, Alessandro; Virtanen, Pauli; Giazotto, Francesco

Journal or series: Entropy

eISSN: 1099-4300

Publication year: 2019

Volume: 21

Issue number: 10

Article number: 1005

Publisher: MDPI

Publication country: Switzerland

Publication language: English

DOI: https://doi.org/10.3390/e21101005

Publication open access: Openly available

Publication channel open access: Open Access channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/66288

Publication is parallel published: https://arxiv.org/abs/1909.09554

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.

Keywords: superconductors; superconductivity; thermodynamics; quantum physics

Free keywords: proximity effect; superconductivity; Josephson junction; SNS junction; Josephson thermodynamics; Maxwell relation; quasi-particles entropy; quantum thermodynamics; quantum machines; quantum coolers

Contributing organizations

Ministry reporting: Yes

Reporting Year: 2019

JUFO rating: 1