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説明:

Nonreciprocal charge transport phenomena are widely studied in two-dimensional superconductors, which demonstrates unidirectional anisotropy behaviors as a result of symmetry breaking. Here, we report a strongly nonreciprocal transport phenomenon in superconducting CsV 3 Sb 5 thin flakes. The second harmonic voltage, mainly originates from the rectification effect of vortex motion, is unambiguously developed with in-plane and out-of-plane magnetic fields, and its magnitude is comparable to that in noncentrosymmetric superconductors. The second harmonic magnetoresistance splits into several peaks and some of them reverse their sign by ramping the magnetic field or current within the superconducting transition. The vortex dynamics for the specifically nonreciprocal transport phenomenon is dominated by an unconventional superconductivity pairing symmetry, providing a promising path to explore the possible topological superconductivity in CsV 3 Sb 5 .

権利情報:

• Creative Commons BY Attribution 4.0 International
  

キーワード: Nonreciprocal transport, superconducting, CsV3Sb5

刊行年月日: 2022-11-01

出版者: Springer Science and Business Media LLC

掲載誌:

• npj Quantum Materials (ISSN: 23974648) vol. 7 issue. 1 105

研究助成金:

• National Natural Science Foundation of China 12104302
• the start-up funding from ShanghaiTech University
• A3 Foresight by JSPS

原稿種別: 出版者版 (Version of record)

MDR DOI:

公開URL: https://doi.org/10.1038/s41535-022-00516-9

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更新時刻: 2025-02-28 08:31:18 +0900

MDRでの公開時刻: 2025-02-28 08:31:18 +0900