Magnetic Field-Enhanced Graphene Superconductivity with Record Pauli-Limit Violation

Jixiang Yang; Omid Sharifi Sedeh; Chiho Yoon; Shenyong Ye; Henok Weldeyesus; Armel Cotten; Tonghang Han; Zhengguang Lu; Zach Hadjri; Junseok Seo; Lihan Shi; Emily Aitken; Prayoga P Liong; Zhenghan Wu; Mingchi Xu; Christian Scheller; Mingyang Zheng; Rasul Gazizulin; Kenji Watanabe; Takashi Taniguchi; Dominique Laroche; Mingda Li; Fan Zhang; Dominik M. Zumbühl; Long Ju

arXiv · 2510.10873

Magnetic Field-Enhanced Graphene Superconductivity with Record Pauli-Limit Violation

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Abstract

Spin-polarized superconductors offer a rare platform for studying electronic correlations, but few candidate systems have been experimentally confirmed to date. Here, we report the observation of a spin-polarized superconducting state, denoted SC5, in WSe2-proximitized rhombohedral trilayer graphene. At in-plane magnetic field B|| = 0 T, SC5 has a critical temperature of 68 mK and an out-of-plane critical magnetic field of only 12 mT. Surprisingly, these values are significantly enhanced as B|| increases, and the superconductivity persists to B|| = 8.8 T. This value corresponds to a record-high Pauli-limit violation ratio of at least 80 among all superconductors, while the true critical field is beyond the limit of our instrument. We conclude that SC5 experiences a canting crossover from Ising-type to spin-polarized superconductor with increased B||.

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Jixiang Yang, Omid Sharifi Sedeh, Chiho Yoon, Shenyong Ye, Henok Weldeyesus, Armel Cotten, Tonghang Han, Zhengguang Lu, Zach Hadjri, Junseok Seo, Lihan Shi, Emily Aitken, Prayoga P Liong, Zhenghan Wu, Mingchi Xu, Christian Scheller, Mingyang Zheng, Rasul Gazizulin, Kenji Watanabe, Takashi Taniguchi, Dominique Laroche, Mingda Li, Fan Zhang, Dominik M. Zumbühl, Long Ju. 2025-10-13. Magnetic Field-Enhanced Graphene Superconductivity with Record Pauli-Limit Violation. https://arxiv.org/abs/2510.10873

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