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Intrinsic Superconducting Diode Effect

Akito Daido, Yuhei Ikeda, and Youichi Yanase
Phys. Rev. Lett. 128, 037001 – Published 20 January 2022
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Abstract

Stimulated by the recent experiment [F. Ando et al., Nature (London) 584, 373 (2020).], we propose an intrinsic mechanism to cause the superconducting diode effect (SDE). SDE refers to the nonreciprocity of the critical current for the metal-superconductor transition. Among various mechanisms for the critical current, the depairing current is known to be intrinsic to each material and has recently been observed in several superconducting systems. We clarify the temperature scaling of the nonreciprocal depairing current near the critical temperature and point out its significant enhancement at low temperatures. It is also found that the nonreciprocal critical current shows sign reversals upon increasing the magnetic field. These behaviors are understood by the nonreciprocity of the Landau critical momentum and the change in the nature of the helical superconductivity. The intrinsic SDE unveils the rich phase diagram and functionalities of noncentrosymmetric superconductors.

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  • Received 6 June 2021
  • Accepted 8 December 2021

DOI:https://doi.org/10.1103/PhysRevLett.128.037001

© 2022 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Akito Daido1,*, Yuhei Ikeda1, and Youichi Yanase1,2

  • 1Department of Physics, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
  • 2Institute for Molecular Science, Okazaki 444-8585, Japan

  • *daido@scphys.kyoto-u.ac.jp

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Issue

Vol. 128, Iss. 3 — 21 January 2022

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