Field-resilient supercurrent diode in a multiferroic van der Waals Josephson junction

ORAL

Abstract

Most zero-field supercurrent diodes rely on ferromagnetism, requiring an initial magnetic field to polarize the ferromagnetic moment. However, this reliance on ferromagnetism also makes them unreliable, as stray magnetic fields in an electronic circuit can randomly flip the ferromagnetic moment. Here, we demonstrate a field-resilient supercurrent diode by strategically incorporating a 2D multiferroic NiI2 with the desired symmetry into a van der Waals Josephson junction. We observed a pronounced supercurrent diode effect at zero magnetic field, and more importantly, the supercurrent rectification persists over a wide and bipolar magnetic field range beyond ±10 mT, an industrial standard for field tolerance. By theoretically modeling a multiferroic Josephson junction, we unveil that the interplay between spin-orbit coupling and multiferroicity underlies the unusual field resilience of the observed diode effect. This work introduces multiferroic Josephson junctions as a new field-resilient superconducting device for cryogenic electronics.

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Publication: Yang, HY., Cuozzo, J.J., Bokka, A.J. et al. Field-resilient supercurrent diode in a multiferroic Josephson junction. Nat Commun 16, 9287 (2025). https://doi.org/10.1038/s41467-025-63698-3

Presenters

  • Hung-Yu Yang

    • University of California, Los Angeles

Authors

  • Hung-Yu Yang

    • University of California, Los Angeles

  • Joseph J Guozzo

    • The University of Texas at El Paso
    • The University of Texas, El Paso

  • Anand Johnson Bokka

    • University of California, Irvine
    • University of California, Los Angeles

  • Gang Qiu

    • University of Minnesota

  • Christopher Eckberg

    • Rigetti Computing
    • University of California, Los Angeles

  • Yanfeng Lyu

    • School of Science, Nanjing University of Posts and Telecommunications

  • Shuyuan huyan

    • Ames National Laboratory

  • Paul C. W. Chu

    • University of Houston
    • TCSUH and Department of Physics, University of Houston; Lawrence Berkeley National Laboratory; Hong Kong University of Science and Technology

  • Kenji Watanabe

    • National Institute for Materials Science
    • Research Center for Functional Materials, National Institute of Materials Science, 1-1 Namiki Tsukuba, Ibaraki 305-0044, Japan

  • Takashi Taniguchi

    • National Institute for Materials Science
    • Research Center for Materials Nanoarchitectonics, National Institute for Materials Science
    • International Center for Materials Nanoarchitectonics, National Institute of Materials Science, 1-1 Namiki Tsukuba, Ibaraki 305-0044, Japan
    • Research Center for Functional Materials, National Institute of Materials Science, 1-1 Namiki Tsukuba, Ibaraki 305-0044, Japan

  • Kang-Lung Wang

    • University of California, Los Angeles