Spin-polarized Superconductivity and High-Chern Insulators in Twisted Rhombohedral Graphene Family

@misc{huo2026spinpolarized,
  title = {{Spin-polarized Superconductivity and High-Chern Insulators in Twisted Rhombohedral Graphene Family}},
  author = {Zihao Huo and Zexu Li and Wenxuan Wang and Gengdong Zhou and Qiu Yang and Xin Sui and Zaizhe Zhang and Kenji Watanabe and Takashi Taniguchi and Zhida Song and Kaihui Liu and Xiaobo Lu},
  howpublished = {arXiv},
  year = {2026},
  month = sep,
  doi = {10.48550/arxiv.2609.12504},
  eprint = {2609.12504},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2609.12504},
  note = {CC BY-NC-SA 4.0},
}

TY  - UNPB
TI  - Spin-polarized Superconductivity and High-Chern Insulators in Twisted Rhombohedral Graphene Family
AU  - Zihao Huo
AU  - Zexu Li
AU  - Wenxuan Wang
AU  - Gengdong Zhou
AU  - Qiu Yang
AU  - Xin Sui
AU  - Zaizhe Zhang
AU  - Kenji Watanabe
AU  - Takashi Taniguchi
AU  - Zhida Song
AU  - Kaihui Liu
AU  - Xiaobo Lu
PY  - 2026
DA  - 2026/09/11
PB  - arXiv
DO  - 10.48550/arxiv.2609.12504
UR  - https://arxiv.org/abs/2609.12504
AB  - Rhombohedral multilayer graphene has emerged as a remarkably versatile platform for exploring strong correlation driven quantum states arising from low-energy topological flat bands. When reconstructed by the moire superlattice, these bands host a wide range of emergent novel states, including integer and fractional Chern insulators and unconventional superconductivity. Here, we firstly report the simultaneous emergence of widespread spin polarized SC and high Chern insulators in twisted bilayer multilayer RMG system 2+n where n=4,5,6. The SC states in 2+n system exhibit different responses to the in plane magnetic field, with SC being suppressed, enhanced and induced by in plane magnetic field . The latter two are consistent with spin-triplet pairing. Along with SC, angle and layer dependent HCIs with tunable Chern numbers emerge. Moreover, the fractional high Chern insulator in the system survives under high in plane magnetic field which can induce SC in the same device. Our work not only establishs twisted bilayer multilayer rhombohedral graphene as a unified platform for studying SC and high Chern insulators, but also opens a pathway towards multiple copropagating chiral Majorana channels by coupling spin-polarized SC to high Chern insulators.
ER  -