Topological Chiral Superconductivity in the Triangular-Lattice Hofstadter-Hubbard Model
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arXiv
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| Autores principales: | , , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| Acceso en línea: | |
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| _version_ | 1866916930776989696 |
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| author | Chen, Feng Wang, Wen O. Zhang, Jia-Xin Balents, Leon Sheng, D. N. |
| author_facet | Chen, Feng Wang, Wen O. Zhang, Jia-Xin Balents, Leon Sheng, D. N. |
| contents | Moiré materials provide exciting platforms for studying the interplay of strong electronic correlation and large magnetic flux effects. We study the lightly doped Hofstadter-Hubbard model on a triangular lattice through large-scale density matrix renormalization group and determinantal quantum Monte Carlo simulations. We find strong evidence for a robust chiral superconducting (SC) phase with dominant power-law pairing correlations and a quantized spin Chern number. The SC phase emerges at very weak interaction and grows stronger at intermediate interaction strengths (U ) for a wide range of hole doping. We also discuss the possible distinct nature of the normal state in different U regimes. Our work provides theoretical insights into the emergence of topological superconductivity from doping topological Chern bands or magnetic flux induced chiral spin liquid states of Moiré materials. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_02757 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Topological Chiral Superconductivity in the Triangular-Lattice Hofstadter-Hubbard Model Chen, Feng Wang, Wen O. Zhang, Jia-Xin Balents, Leon Sheng, D. N. Strongly Correlated Electrons Superconductivity Moiré materials provide exciting platforms for studying the interplay of strong electronic correlation and large magnetic flux effects. We study the lightly doped Hofstadter-Hubbard model on a triangular lattice through large-scale density matrix renormalization group and determinantal quantum Monte Carlo simulations. We find strong evidence for a robust chiral superconducting (SC) phase with dominant power-law pairing correlations and a quantized spin Chern number. The SC phase emerges at very weak interaction and grows stronger at intermediate interaction strengths (U ) for a wide range of hole doping. We also discuss the possible distinct nature of the normal state in different U regimes. Our work provides theoretical insights into the emergence of topological superconductivity from doping topological Chern bands or magnetic flux induced chiral spin liquid states of Moiré materials. |
| title | Topological Chiral Superconductivity in the Triangular-Lattice Hofstadter-Hubbard Model |
| topic | Strongly Correlated Electrons Superconductivity |
| url | https://arxiv.org/abs/2509.02757 |