Observation of giant nonreciprocal charge transport from quantum Hall states in a topological insulator
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arXiv
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| Main Authors: | , , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2023
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| Subjects: | |
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| _version_ | 1866911815196213248 |
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| author | Li, Chunfeng Wang, Rui Zhang, Shuai Qin, Yuyuan Ying, Zhe Wei, Boyuan Dai, Zheng Guo, Fengyi Chen, Wei Zhang, Rong Wang, Baigeng Wang, Xuefeng Song, Fengqi |
| author_facet | Li, Chunfeng Wang, Rui Zhang, Shuai Qin, Yuyuan Ying, Zhe Wei, Boyuan Dai, Zheng Guo, Fengyi Chen, Wei Zhang, Rong Wang, Baigeng Wang, Xuefeng Song, Fengqi |
| contents | Symmetry breaking in quantum materials is of great importance and can lead to nonreciprocal charge transport. Topological insulators provide a unique platform to study nonreciprocal charge transport due to their surface states, especially quantum Hall states under external magnetic field. Here, we report the observation of nonreciprocal charge transport mediated by quantum Hall states in devices composed of the intrinsic topological insulator Sn-Bi1.1Sb0.9Te2S, which is attributed to asymmetric scattering between quantum Hall states and Dirac surface states. A giant nonreciprocal coefficient of up to 2.26*10^5 A^-1 is found. Our work not only reveals the properties of nonreciprocal charge transport of quantum Hall states in topological insulators, but also paves the way for future electronic devices. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2307_08917 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Observation of giant nonreciprocal charge transport from quantum Hall states in a topological insulator Li, Chunfeng Wang, Rui Zhang, Shuai Qin, Yuyuan Ying, Zhe Wei, Boyuan Dai, Zheng Guo, Fengyi Chen, Wei Zhang, Rong Wang, Baigeng Wang, Xuefeng Song, Fengqi Mesoscale and Nanoscale Physics Materials Science Symmetry breaking in quantum materials is of great importance and can lead to nonreciprocal charge transport. Topological insulators provide a unique platform to study nonreciprocal charge transport due to their surface states, especially quantum Hall states under external magnetic field. Here, we report the observation of nonreciprocal charge transport mediated by quantum Hall states in devices composed of the intrinsic topological insulator Sn-Bi1.1Sb0.9Te2S, which is attributed to asymmetric scattering between quantum Hall states and Dirac surface states. A giant nonreciprocal coefficient of up to 2.26*10^5 A^-1 is found. Our work not only reveals the properties of nonreciprocal charge transport of quantum Hall states in topological insulators, but also paves the way for future electronic devices. |
| title | Observation of giant nonreciprocal charge transport from quantum Hall states in a topological insulator |
| topic | Mesoscale and Nanoscale Physics Materials Science |
| url | https://arxiv.org/abs/2307.08917 |