中文版 | English
Title

Time-reversal symmetry broken quantum spin Hall phase in the van der Waals heterostructure ZrTe5/Cr2Ge2Te6

Author
Corresponding AuthorXiao, Xiaoliang
Publication Years
2022-09-01
DOI
Source Title
ISSN
1367-2630
Volume24Issue:9
Abstract
The topological phases with time-reversal symmetry (TRS) breaking have always attracted intense studies due to their potential applications to spintronics. The previous studies mainly focused on the exploration of quantum anomalous Hall effects, but another typical TRS-broken two-dimensional topological phase, i.e., the TRS-broken quantum spin Hall (QSH) effect, has rarely been proposed in realistic materials. Here, based on first-principles calculations and topology analysis, we show that the van der Waals heterostructure ZrTe5/Cr2Ge2Te6 can realize the robust TRS-broken QSH state. We utilize the topological edge states and spin Hall conductance, which can be measured in experiments directly, to confirm the appearance of TRS-broken QSH phase. Moreover, we uncover that the built-in electric field is essential to realize such topological state and an external electric field can effectively tune the nontrivial band gap. Our findings not only provide a reliable candidate to obtain the TRS-broken QSH phase with a high tunability but also can facilitate further applications to topological quantum transport.
Keywords
URL[Source Record]
Indexed By
Language
English
SUSTech Authorship
Others
Funding Project
Natural Science Foundation of China["12174040","12147102"] ; Chongqing Natural Science Foundation[cstc2020jcyj-msxmX0118]
WOS Research Area
Physics
WOS Subject
Physics, Multidisciplinary
WOS Accession No
WOS:000857447500001
Publisher
ESI Research Field
PHYSICS
Data Source
Web of Science
Citation statistics
Cited Times [WOS]:0
Document TypeJournal Article
Identifierhttp://kc.sustech.edu.cn/handle/2SGJ60CL/406087
DepartmentCenter for Computational Science and Engineering
Affiliation
1.Chongqing Univ, Inst Struct & Funct, Chongqing 401331, Peoples R China
2.Chongqing Univ, Dept Phys, Chongqing 401331, Peoples R China
3.Southern Univ Sci & Technol, Ctr Computat Sci & Engn, Shenzhen 518055, Peoples R China
4.Chongqing Key Lab Strongly Coupled Phys, Chongqing 401331, Peoples R China
5.Chongqing Univ, Ctr Quantum Mat & Devices, Chongqing 401331, Peoples R China
Recommended Citation
GB/T 7714
Xiao, Xiaoliang,Zhan, Fangyang,Kong, Weixiang,et al. Time-reversal symmetry broken quantum spin Hall phase in the van der Waals heterostructure ZrTe5/Cr2Ge2Te6[J]. NEW JOURNAL OF PHYSICS,2022,24(9).
APA
Xiao, Xiaoliang,Zhan, Fangyang,Kong, Weixiang,Fan, Jing,Wang, Rui,&Wu, Xiaozhi.(2022).Time-reversal symmetry broken quantum spin Hall phase in the van der Waals heterostructure ZrTe5/Cr2Ge2Te6.NEW JOURNAL OF PHYSICS,24(9).
MLA
Xiao, Xiaoliang,et al."Time-reversal symmetry broken quantum spin Hall phase in the van der Waals heterostructure ZrTe5/Cr2Ge2Te6".NEW JOURNAL OF PHYSICS 24.9(2022).
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