DOE OSTI · 3014076
Field-resilient supercurrent diode in a multiferroic Josephson junction
Abstract
The research on supercurrent diodes has surged rapidly due to their potential applications in electronic circuits at cryogenic temperatures. To unlock this functionality, it is essential to find supercurrent diodes that can work consistently at zero magnetic field and under ubiquitous stray fields generated in electronic circuits. However, a supercurrent diode with robust field tolerance is currently lacking. Here, we demonstrate a field-resilient supercurrent diode by incorporating a 2D multiferroic material into a Josephson junction, and observed a pronounced supercurrent diode effect at zero magnetic field. More importantly, the supercurrent rectification persists over a wide and bipolar magnetic field range beyond industrial standards 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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Yang, Hung-Yu [Univ. of California, Los Angeles, CA (United States)] (ORCID:0000000247379826), Cuozzo, Joseph J. [Sandia National Laboratories (SNL-CA), Livermore, CA (United States); Univ. of Texas at El Paso, TX (United States)], Bokka, Anand Johnson [Univ. of California, Los Angeles, CA (United States)] (ORCID:0009000964878422), Qiu, Gang [Univ. of California, Los Angeles, CA (United States)] (ORCID:0000000322483253), Eckberg, Christopher [Univ. of California, Los Angeles, CA (United States)] (ORCID:0000000235648443), Lyu, Yanfeng [Nanjing Univ. of Posts and Telecommunications (China)], Huyan, Shuyuan [Univ. of Houston, TX (United States)] (ORCID:0000000309992440), Chu, Ching-Wu [Univ. of Houston, TX (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)] (ORCID:0000000339557095), Watanabe, Kenji [National Institute for Materials Science (NIMS), Tsukuba (Japan)] (ORCID:0000000337018119), Taniguchi, Takashi [National Institute for Materials Science (NIMS), Tsukuba (Japan)] (ORCID:0000000214673105), Wang, Kang L. [Univ. of California, Los Angeles, CA (United States)] (ORCID:0000000293631279). 2025-10-21. Field-resilient supercurrent diode in a multiferroic Josephson junction. https://doi.org/10.1038/s41467-025-63698-3
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