Large Quantum Anomalous Hall Effect in Spin-Orbit Proximitized Rhombohedral Graphene
Fuente:
arXiv
Guardado en:
| Autores principales: | , , , , , , , , , , |
|---|---|
| Formato: | Preprint |
| Publicado: |
2023
|
| Materias: | |
| Acceso en línea: | |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| _version_ | 1866917663353077760 |
|---|---|
| author | Han, Tonghang Lu, Zhengguang Yao, Yuxuan Yang, Jixiang Seo, Junseok Yoon, Chiho Watanabe, Kenji Taniguchi, Takashi Fu, Liang Zhang, Fan Ju, Long |
| author_facet | Han, Tonghang Lu, Zhengguang Yao, Yuxuan Yang, Jixiang Seo, Junseok Yoon, Chiho Watanabe, Kenji Taniguchi, Takashi Fu, Liang Zhang, Fan Ju, Long |
| contents | The quantum anomalous Hall effect (QAHE) is a robust topological phenomenon featuring quantized Hall resistance at zero magnetic field. We report the QAHE in a rhombohedral pentalayer graphene/monolayer WS2 heterostructure. Distinct from other experimentally confirmed QAHE systems, this system has neither magnetic element nor moiré superlattice effect. The QAH states emerge at charge neutrality and feature Chern numbers C = +-5 at temperatures up to about 1.5 K. This large QAHE arises from the synergy of the electron correlation in intrinsic flat bands of pentalayer graphene, the gate-tuning effect, and the proximity-induced Ising spin-orbit-coupling. Our experiment demonstrates the potential of crystalline two-dimensional materials for intertwined electron correlation and band topology physics, and may enable a route for engineering chiral Majorana edge states. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2310_17483 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Large Quantum Anomalous Hall Effect in Spin-Orbit Proximitized Rhombohedral Graphene Han, Tonghang Lu, Zhengguang Yao, Yuxuan Yang, Jixiang Seo, Junseok Yoon, Chiho Watanabe, Kenji Taniguchi, Takashi Fu, Liang Zhang, Fan Ju, Long Mesoscale and Nanoscale Physics The quantum anomalous Hall effect (QAHE) is a robust topological phenomenon featuring quantized Hall resistance at zero magnetic field. We report the QAHE in a rhombohedral pentalayer graphene/monolayer WS2 heterostructure. Distinct from other experimentally confirmed QAHE systems, this system has neither magnetic element nor moiré superlattice effect. The QAH states emerge at charge neutrality and feature Chern numbers C = +-5 at temperatures up to about 1.5 K. This large QAHE arises from the synergy of the electron correlation in intrinsic flat bands of pentalayer graphene, the gate-tuning effect, and the proximity-induced Ising spin-orbit-coupling. Our experiment demonstrates the potential of crystalline two-dimensional materials for intertwined electron correlation and band topology physics, and may enable a route for engineering chiral Majorana edge states. |
| title | Large Quantum Anomalous Hall Effect in Spin-Orbit Proximitized Rhombohedral Graphene |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2310.17483 |