利用超导金属和合金进行磁热开关。

Magneto-thermal switching using superconducting metals and alloys.

作者信息

Arima Hiroto, Murakami Takumi, Rani Poonam, Mizuguchi Yoshikazu

机构信息

National Metrology Institute of Japan, National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki, Japan.

Department of Physics, Tokyo Metropolitan University, Hachioji, Japan.

出版信息

Sci Technol Adv Mater. 2025 May 27;26(1):2506978. doi: 10.1080/14686996.2025.2506978. eCollection 2025.

DOI:10.1080/14686996.2025.2506978

PMID:40510299

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12160326/

Abstract

Superconductors exhibit low thermal conductivity () due to the suppression of electronic thermal conduction in the superconducting states with Cooper pairs. This change in enables superconductors to function as magneto-thermal switches (MTS). In this article, we review MTS behavior in pure-metal superconductors, phase-separated superconductors, and alloy-based superconductors. A large switching ratio can be achieved using high-purity superconducting metals. Nonvolatile MTS is observed in phase-separated superconductors, where the flux-trapping states are crucial for the nonvolatile MTS.

摘要

由于在超导态下库珀对抑制了电子热传导，超导体表现出低导热率（）。这种导热率的变化使超导体能够用作磁热开关（MTS）。在本文中，我们回顾了纯金属超导体、相分离超导体和合金基超导体中的MTS行为。使用高纯度超导金属可以实现较大的开关比。在相分离超导体中观察到非挥发性MTS，其中磁通俘获态对于非挥发性MTS至关重要。