Multiple Superconducting Phases in Rhombohedral Heptalayer Graphene
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| Autores principales: | , , , , , , , , , , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2026
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| Materias: | |
| Acceso en línea: | |
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| _version_ | 1866911693758529536 |
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| author | Zheng, Chuanqi Li, Chushan Zhang, Chenyu Watanabe, Kenji Taniguchi, Takashi Yang, Hao Guan, Dandan Liu, Liang Wang, Shiyong Li, Yaoyi Zheng, Hao Liu, Canhua Jia, Jinfeng Shi, Zhiwen Chen, Guorui Li, Tingxin Liu, Xiaoxue |
| author_facet | Zheng, Chuanqi Li, Chushan Zhang, Chenyu Watanabe, Kenji Taniguchi, Takashi Yang, Hao Guan, Dandan Liu, Liang Wang, Shiyong Li, Yaoyi Zheng, Hao Liu, Canhua Jia, Jinfeng Shi, Zhiwen Chen, Guorui Li, Tingxin Liu, Xiaoxue |
| contents | Crystalline rhombohedral multilayer graphene (RMG) has emerged as an ideal platform for studying unconventional superconductivity. Here, we report the observation of superconductivity in moiréless rhombohedral heptalayer graphene (RHG) at zero magnetic field. The superconducting phases emerge at low displacement electric fields (|D| < 0.2 V/nm) and are symmetrically distributed about D = 0, with one robust state exhibiting zero resistance and two weaker superconducting features. Comparisons with rhombohedral pentalayer graphene (RPG) reveal distinct perpendicular magnetic-field responses, and quantum oscillation measurements indicate that superconductivity in RHG arises from a half-metallic normal state. These results highlight the strong dependence of superconductivity on layer number and electronic structure in RMG systems and provide new insights into its microscopic origin. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2605_17890 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Multiple Superconducting Phases in Rhombohedral Heptalayer Graphene Zheng, Chuanqi Li, Chushan Zhang, Chenyu Watanabe, Kenji Taniguchi, Takashi Yang, Hao Guan, Dandan Liu, Liang Wang, Shiyong Li, Yaoyi Zheng, Hao Liu, Canhua Jia, Jinfeng Shi, Zhiwen Chen, Guorui Li, Tingxin Liu, Xiaoxue Mesoscale and Nanoscale Physics Crystalline rhombohedral multilayer graphene (RMG) has emerged as an ideal platform for studying unconventional superconductivity. Here, we report the observation of superconductivity in moiréless rhombohedral heptalayer graphene (RHG) at zero magnetic field. The superconducting phases emerge at low displacement electric fields (|D| < 0.2 V/nm) and are symmetrically distributed about D = 0, with one robust state exhibiting zero resistance and two weaker superconducting features. Comparisons with rhombohedral pentalayer graphene (RPG) reveal distinct perpendicular magnetic-field responses, and quantum oscillation measurements indicate that superconductivity in RHG arises from a half-metallic normal state. These results highlight the strong dependence of superconductivity on layer number and electronic structure in RMG systems and provide new insights into its microscopic origin. |
| title | Multiple Superconducting Phases in Rhombohedral Heptalayer Graphene |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2605.17890 |