Magnetic-field-induced superconductivity in hexalayer rhombohedral graphene
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| Main Authors: | , , , , , , , |
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| Format: | Preprint |
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2026
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| _version_ | 1866910052665786368 |
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| author | Deng, Jinghao Xie, Jiabin Li, Hongyuan Taniguchi, Takashi Watanabe, Kenji Shan, Jie Mak, Kin Fai Liu, Xiaomeng |
| author_facet | Deng, Jinghao Xie, Jiabin Li, Hongyuan Taniguchi, Takashi Watanabe, Kenji Shan, Jie Mak, Kin Fai Liu, Xiaomeng |
| contents | 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 $B_{\parallel}$, a superconducting state emerges within a narrow band along a phase boundary. Its properties evolve continuously with increasing $B_{\parallel}$: the superconducting region progressively shifts toward higher electric field as the $B_{\parallel}$ increases and the transition temperature rises with increasing $B_{\parallel}$. Remarkably, the superconducting state remains robust under $B_{\parallel}$ 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2603_13498 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Magnetic-field-induced superconductivity in hexalayer rhombohedral graphene Deng, Jinghao Xie, Jiabin Li, Hongyuan Taniguchi, Takashi Watanabe, Kenji Shan, Jie Mak, Kin Fai Liu, Xiaomeng Mesoscale and Nanoscale Physics Strongly Correlated Electrons 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 $B_{\parallel}$, a superconducting state emerges within a narrow band along a phase boundary. Its properties evolve continuously with increasing $B_{\parallel}$: the superconducting region progressively shifts toward higher electric field as the $B_{\parallel}$ increases and the transition temperature rises with increasing $B_{\parallel}$. Remarkably, the superconducting state remains robust under $B_{\parallel}$ 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. |
| title | Magnetic-field-induced superconductivity in hexalayer rhombohedral graphene |
| topic | Mesoscale and Nanoscale Physics Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2603.13498 |