Switchable Quantized Signal between Longitudinal Conductance and Hall Conductance in Dual Quantum Spin Hall Insulator TaIrTe4
文献类型：期刊论文
| 作者 | Lai, Junwen1,2; Liu, Xiangyang1,2; Zhan, Jie1,2; Yu, Tianye1; Liu, Peitao1,2; Chen, Xing-Qiu1,2; Sun, Yan1,2 |
| 刊名 | RESEARCH
 |
| 出版日期 | 2024-08-22 |
| 卷号 | 7页码:8 |
| ISSN号 | 2096-5168 |
| DOI | 10.34133/research.0439 |
| 通讯作者 | Chen, Xing-Qiu(xingqiu.chen@imr.ac.cn) ; Sun, Yan(sunyan@imr.ac.cn) |
| 英文摘要 | Topological insulating states in 2-dimensional (2D) materials are ideal systems to study different types of quantized response signals due to their in gap metallic states. Very recently, the quantum spin Hall effect was discovered in monolayer TaIrTe4 via the observation of quantized longitudinal conductance that rarely exists in other 2D topological insulators. The nontrivial Z(2) topological charges can exist at both charge neutrality point and the van Hove singularity point with correlation-effect-induced bandgap. On the basis of this model 2D material, we studied the switch of quantized signals between longitudinal conductance and transversal Hall conductance via tuning external magnetic field. In Z(2) topological phase of monolayer TaIrTe4, the zero Chern number can be understood as 1 - 1 = 0 from the double band inversion from spin-up and spin-down channels. After applying a magnetic field perpendicular to the plane, the Zeeman split changes the band order for one branch of the band inversion from spin-up and spin-down channels, along with a sign charge of the Berry phase. Then, the net Chern number of 1 - 1 = 0 is tuned to 1 + 1 = 2 or -1 - 1 = -2 depending on the orientation of the magnetic field. The quantized signal not only provides another effective method for the verification of topological state in monolayer TaIrTe4 but also offers a strategy for the utilization of the new quantum topological states based on switchable quantized responses. |
| 资助项目 | Foundation from Liaoning Province[XLYC2203080] ; National Natural Science Foundation of China[52271016] ; National Natural Science Foundation of China[52188101] ; National Key R&D Program of China[2021YFB3501503] |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:001311150000001 |
| 出版者 | AMER ASSOC ADVANCEMENT SCIENCE |
| 资助机构 | Foundation from Liaoning Province ; National Natural Science Foundation of China ; National Key R&D Program of China |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Chen, Xing-Qiu; Sun, Yan |
| 作者单位 | 1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lai, Junwen,Liu, Xiangyang,Zhan, Jie,et al. Switchable Quantized Signal between Longitudinal Conductance and Hall Conductance in Dual Quantum Spin Hall Insulator TaIrTe4[J]. RESEARCH,2024,7:8. |
| APA | Lai, Junwen.,Liu, Xiangyang.,Zhan, Jie.,Yu, Tianye.,Liu, Peitao.,...&Sun, Yan.(2024).Switchable Quantized Signal between Longitudinal Conductance and Hall Conductance in Dual Quantum Spin Hall Insulator TaIrTe4.RESEARCH,7,8. |
| MLA | Lai, Junwen,et al."Switchable Quantized Signal between Longitudinal Conductance and Hall Conductance in Dual Quantum Spin Hall Insulator TaIrTe4".RESEARCH 7(2024):8. |
入库方式： OAI收割
来源：金属研究所
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