Superconducting diode effect via conformal-mapped nanoholes

Yang-Yang Lyu, Ji Jiang, Yong-Lei Wang (), Zhi-Li Xiao (), Sining Dong, Qing-Hu Chen, Milorad V. Milošević, Huabing Wang, Ralu Divan, John E. Pearson, Peiheng Wu, Francois M. Peeters and Wai-Kwong Kwok
Additional contact information
Yang-Yang Lyu: Research Institute of Superconductor Electronics, School of Electronic Science and Engineering, Nanjing University
Ji Jiang: Zhejiang University
Yong-Lei Wang: Research Institute of Superconductor Electronics, School of Electronic Science and Engineering, Nanjing University
Zhi-Li Xiao: Materials Science Division, Argonne National Laboratory
Sining Dong: Research Institute of Superconductor Electronics, School of Electronic Science and Engineering, Nanjing University
Qing-Hu Chen: Zhejiang University
Milorad V. Milošević: University of Antwerp
Huabing Wang: Research Institute of Superconductor Electronics, School of Electronic Science and Engineering, Nanjing University
Ralu Divan: Center for Nanoscale Materials, Argonne National Laboratory
John E. Pearson: Materials Science Division, Argonne National Laboratory
Peiheng Wu: Research Institute of Superconductor Electronics, School of Electronic Science and Engineering, Nanjing University
Francois M. Peeters: University of Antwerp
Wai-Kwong Kwok: Materials Science Division, Argonne National Laboratory

Nature Communications, 2021, vol. 12, issue 1, 1-7

Abstract: Abstract A superconducting diode is an electronic device that conducts supercurrent and exhibits zero resistance primarily for one direction of applied current. Such a dissipationless diode is a desirable unit for constructing electronic circuits with ultralow power consumption. However, realizing a superconducting diode is fundamentally and technologically challenging, as it usually requires a material structure without a centre of inversion, which is scarce among superconducting materials. Here, we demonstrate a superconducting diode achieved in a conventional superconducting film patterned with a conformal array of nanoscale holes, which breaks the spatial inversion symmetry. We showcase the superconducting diode effect through switchable and reversible rectification signals, which can be three orders of magnitude larger than that from a flux-quantum diode. The introduction of conformal potential landscapes for creating a superconducting diode is thereby proven as a convenient, tunable, yet vastly advantageous tool for superconducting electronics. This could be readily applicable to any superconducting materials, including cuprates and iron-based superconductors that have higher transition temperatures and are desirable in device applications.

Date: 2021
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DOI: 10.1038/s41467-021-23077-0

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