Switchable Quantized Signal between Longitudinal Conductance and Hall Conductance in Dual Quantum Spin Hall Insulator TaIrTe<sub>4</sub>

doi:10.34133/research.0439

IMR OpenIR

	Switchable Quantized Signal between Longitudinal Conductance and Hall Conductance in Dual Quantum Spin Hall Insulator TaIrTe₄
	Lai, Junwen 1,2; Liu, Xiangyang 1,2; Zhan, Jie 1,2; Yu, Tianye 1; Liu, Peitao 1,2; Chen, Xing-Qiu 1,2; Sun, Yan 1,2
通讯作者	Chen, Xing-Qiu(xingqiu.chen@imr.ac.cn) ; Sun, Yan(sunyan@imr.ac.cn)
	2024-08-22
发表期刊	RESEARCH
ISSN	2096-5168
卷号	7 页码:8
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.
资助者	Foundation from Liaoning Province ; National Natural Science Foundation of China ; National Key R&D Program of China
DOI	10.34133/research.0439
收录类别	SCI
语种	英语
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
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:001311150000001
出版者	AMER ASSOC ADVANCEMENT SCIENCE
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/189882
专题	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.