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| Main Authors: | , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2402.16500 |
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| _version_ | 1866917648381509632 |
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| author | Shu, Jiaohong Zhao, Xinxin Fan, Weiqin Wang, Lili Chen, Guanglong Wu, Jianbao Mi, Yiming |
| author_facet | Shu, Jiaohong Zhao, Xinxin Fan, Weiqin Wang, Lili Chen, Guanglong Wu, Jianbao Mi, Yiming |
| contents | We establish the map between symmetries and orbital rules to realize tunable band gap in quantum anomalous Hall effect material. This band gap is determined by the SOC between local orbitals associated with band crossing, which is constrained by at least one of lattice symmetries. The band gap could be turned on/off by breaking or keeping corresponding lattice symmetry through rotation of magnetization direction. The components of local orbital related to band crossing is required to match the symmetry, and to produce non-zero SOC when symmetry is broken. Following this map, the TiSb monolayer is predicted to be a quantum anomalous Hall effect material with a band gap adjusted in the range of 0 to 209 meV through magnetization direction rotation. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_16500 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | The Map between Symmetries and Orbital Rules to Realize Tunable Band Gap in Quantum Anomalous Hall Effect Material Shu, Jiaohong Zhao, Xinxin Fan, Weiqin Wang, Lili Chen, Guanglong Wu, Jianbao Mi, Yiming Mesoscale and Nanoscale Physics We establish the map between symmetries and orbital rules to realize tunable band gap in quantum anomalous Hall effect material. This band gap is determined by the SOC between local orbitals associated with band crossing, which is constrained by at least one of lattice symmetries. The band gap could be turned on/off by breaking or keeping corresponding lattice symmetry through rotation of magnetization direction. The components of local orbital related to band crossing is required to match the symmetry, and to produce non-zero SOC when symmetry is broken. Following this map, the TiSb monolayer is predicted to be a quantum anomalous Hall effect material with a band gap adjusted in the range of 0 to 209 meV through magnetization direction rotation. |
| title | The Map between Symmetries and Orbital Rules to Realize Tunable Band Gap in Quantum Anomalous Hall Effect Material |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2402.16500 |