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Research Article | Open Access | Just Accepted

Tunable zero-field superconducting diode effect in two-dimensional ferromagnetic/superconducting Fe3GeTe2/NbSe2 heterostructure

Guojing Hu1,§Yechao Han2,§Weiqi Yu1Senhao Lv1Yuhui Li1,2Zizhao Gong1Hui Guo1,2Ke Zhu1,2Zhen Zhao1,2Qi Qi1,2Guoyu Xian1,2Lihong Bao1,2,3( )Xiao Lin2Jinbo Pan1,2( )Shixuan Du1,2Haitao Yang1,2,3( )Hong-jun Gao1,2,3

1 Beijing National Center for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China

2 School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China

3 Songshan Lake Materials Laboratory, Dongguan 523808, China

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Abstract

The emergence of superconducting diode effect (SDE) provides a new platform to investigate the intertwining among band topology, superconductivity, and magnetism, thereby establishing the foundation for achieving ultra-low dissipation devices and circuits. The realization of the tunable zero-field SDE in two-dimension (2D) devices is significant for 2D circuits, however, there has been great challenges in the appropriate materials synergy and fine device design. Here, we report a zero-field SDE in the van der Waals (vdW) heterostructure constructed by the Ising superconducting NbSe2 and ferromagnetic Fe3GeTe2 with a large perpendicular magnetic anisotropy. Based on the valley-Zeeman spin-orbit interaction (SOI) in NbSe2, the magnitude and polarity of the zero-field SDE can be modulated by altering the ferromagnetic properties of Fe3GeTe2 through the application of pre-magnetized out-of-plane magnetic fields. Furthermore, the stable half-wave rectification of square-wave currents is achieved by utilizing the tunable zero-field SDE in the Josephson junction-free structure. The tunable zero-field SDE in 2D heterostructures brings new opportunities for understanding the coexistence of superconductivity and time-reversal symmetry breaking, and for fabricating 2D ultra-low dissipation circuits.

Nano Research
Cite this article:
Hu G, Han Y, Yu W, et al. Tunable zero-field superconducting diode effect in two-dimensional ferromagnetic/superconducting Fe3GeTe2/NbSe2 heterostructure. Nano Research, 2024, https://doi.org/10.26599/NR.2025.94907068

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Received: 14 July 2024
Revised: 05 October 2024
Accepted: 11 October 2024
Available online: 11 October 2024

© The author(s) 2025

This article is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0), which permits reusers to distribute, remix, adapt, and build upon the material in any medium or format, so long as attribution is given to the original author(s) and the source, provide a link to the license, and indicate if changes were made.

See https://creativecommons.org/licenses/by/4.0/

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