In conventional superconductors, superconductivity is generally suppressed by external magnetic fields due to spin-singlet pairing. Here, we report signatures of in-plane-magnetic-field-induced superconductivity in hexalayer rhombohedral graphene and reveal electric-field control of its depairing behavior. With the application of a small in-plane magnetic field B∥, a superconducting state emerges within a narrow band along a phase boundary. Its properties evolve continuously with increasing B∥: the superconducting region progressively shifts toward higher electric field as the B∥ increases and the transition temperature rises with increasing B∥. Remarkably, the superconducting state remains robust under B∥ up to 14 T, far exceeding the conventional Pauli limit. Quantum oscillation measurements further reveal that the superconductivity emerges from nematic Fermi surface reconstruction. These results suggest a spin-polarized superconducting states with unconventional origins.
@article{arxiv.2603.13498,
title = {Magnetic-field-induced superconductivity in hexalayer rhombohedral graphene},
author = {Jinghao Deng and Jiabin Xie and Hongyuan Li and Takashi Taniguchi and Kenji Watanabe and Jie Shan and Kin Fai Mak and Xiaomeng Liu},
journal= {arXiv preprint arXiv:2603.13498},
year = {2026}
}