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Anomalous transverse resistance in the topological superconductor β-Bi2Pd

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Listed:
  • Xiaoying Xu

    (Johns Hopkins University)

  • Yufan Li

    (Johns Hopkins University
    The Chinese University of Hong Kong)

  • C. L. Chien

    (Johns Hopkins University
    National Taiwan University)

Abstract

A supercurrent flowing in a superconductor meets no resistance. Yet an electric field may still be established within the superconductor in the presence of dissipative processes, such as vortex motion. Here we report the observation of a transverse voltage drop in superconducting β-Bi2Pd thin films. Unlike the Hall effect in general or in other superconductors, the sign of the observed transverse voltage does not depend on the external magnetic field. Instead, it is dictated by the broken inversion symmetry on the film interfaces. This anomalous transverse voltage, or transverse resistance, is indicative of a chirality that likely resonates with the topological surface states reported in β-Bi2Pd.

Suggested Citation

  • Xiaoying Xu & Yufan Li & C. L. Chien, 2022. "Anomalous transverse resistance in the topological superconductor β-Bi2Pd," Nature Communications, Nature, vol. 13(1), pages 1-5, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-32877-x
    DOI: 10.1038/s41467-022-32877-x
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    References listed on IDEAS

    as
    1. M. Sakano & K. Okawa & M. Kanou & H. Sanjo & T. Okuda & T. Sasagawa & K Ishizaka, 2015. "Topologically protected surface states in a centrosymmetric superconductor β-PdBi2," Nature Communications, Nature, vol. 6(1), pages 1-7, December.
    2. K. Iwaya & Y. Kohsaka & K. Okawa & T. Machida & M. S. Bahramy & T. Hanaguri & T. Sasagawa, 2017. "Full-gap superconductivity in spin-polarised surface states of topological semimetal β-PdBi2," Nature Communications, Nature, vol. 8(1), pages 1-7, December.
    3. J. Wu & A. T. Bollinger & X. He & I. Božović, 2017. "Spontaneous breaking of rotational symmetry in copper oxide superconductors," Nature, Nature, vol. 547(7664), pages 432-435, July.
    4. Clécio C. de Souza Silva & Joris Van de Vondel & Mathieu Morelle & Victor V. Moshchalkov, 2006. "Controlled multiple reversals of a ratchet effect," Nature, Nature, vol. 440(7084), pages 651-654, March.
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