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||.
@article{arxiv.2510.10873,
title = {Magnetic Field-Enhanced Graphene Superconductivity with Record Pauli-Limit Violation},
author = {Jixiang Yang and Omid Sharifi Sedeh and Chiho Yoon and Shenyong Ye and Henok Weldeyesus and Armel Cotten and Tonghang Han and Zhengguang Lu and Zach Hadjri and Junseok Seo and Lihan Shi and Emily Aitken and Prayoga P Liong and Zhenghan Wu and Mingchi Xu and Christian Scheller and Mingyang Zheng and Rasul Gazizulin and Kenji Watanabe and Takashi Taniguchi and Dominique Laroche and Mingda Li and Fan Zhang and Dominik M. Zumbühl and Long Ju},
journal= {arXiv preprint arXiv:2510.10873},
year = {2026}
}