中文版 | English
Title

Two-dimensional antiferromagnetic nodal-line semimetal and quantum anomalous Hall state in the van der Waals heterostructure germanene/Mn2S2

Author
Corresponding AuthorYu,Xiang Long; Wu,Jiansheng
Publication Years
2022-12-14
DOI
Source Title
ISSN
0953-8984
EISSN
1361-648X
Volume34Issue:50
Abstract

Materials with interactions between the topology and magnetism are triggering increasing interest. We constructed a two-dimensional (2D) van der Waals heterostructure germanene/MnS, where the germanene is a quantum spin Hall insulator and MnS provides antiferromagnetic (AFM) interactions. In this structure, a 2D AFM nodal-line semimetal (NLSM) phase is expected without the spin-orbit coupling (SOC), which is of a high density of states around the Fermi level. The band touching rings originate from the intersection between different spin components of p orbitals of germanene. This result provides a possible 2D realization of NLSMs, which are usually realized in three-dimensional systems. When the SOC is present, a quantum anomalous Hall (QAH) state emerges with the annihilation of the band-touching rings. The nontrivial topology is determined by calculating the Chern number and Wannier charge centers. This provides an alternative platform to realize QAH states. These results could also provide the possibility of further understanding the topological states in NLSM and electronic applications.

Keywords
URL[Source Record]
Indexed By
SCI ; EI
Language
English
SUSTech Authorship
Corresponding
Funding Project
National Natural Science Foundation of China[
WOS Research Area
Physics
WOS Subject
Physics, Condensed Matter
WOS Accession No
WOS:000877316300001
Publisher
EI Accession Number
20224613123746
EI Keywords
Annihilation ; Antiferromagnetism ; Quantum Theory ; Topology ; Van Der Waals Forces
ESI Classification Code
Magnetism: Basic Concepts And Phenomena:701.2 ; Physical Chemistry:801.4 ; Combinatorial Mathematics, Includes Graph Theory, Set Theory:921.4 ; Atomic And Molecular Physics:931.3 ; Quantum Theory ; Quantum Mechanics:931.4 ; High Energy Physics:932.1
ESI Research Field
PHYSICS
Scopus EID
2-s2.0-85141866941
Data Source
Scopus
Citation statistics
Cited Times [WOS]:0
Document TypeJournal Article
Identifierhttp://kc.sustech.edu.cn/handle/2SGJ60CL/411758
DepartmentDepartment of Physics
量子科学与工程研究院
Affiliation
1.Department of Physics,Harbin Institute of Technology,Harbin,150001,China
2.Department of Physics,Southern University of Science and Technology,Shenzhen,518055,China
3.Shenzhen Institute for Quantum Science and Engineering (SIQSE),Southern University of Science and Technology,Shenzhen,518055,China
4.International Quantum Academy,Shenzhen,518048,China
5.Key Laboratory of Carbon Nanomaterials,Nano Innovation Institute (NII),College of Chemistry and Materials Science,Inner Mongolia Minzu University,Tongliao,028000,China
First Author AffilicationDepartment of Physics;  Institute for Quantum Science and Engineering
Corresponding Author AffilicationDepartment of Physics;  Institute for Quantum Science and Engineering
Recommended Citation
GB/T 7714
Lv,Qianqian,Fu,Pei Hao,Zhuang,Quan,et al. Two-dimensional antiferromagnetic nodal-line semimetal and quantum anomalous Hall state in the van der Waals heterostructure germanene/Mn2S2[J]. JOURNAL OF PHYSICS-CONDENSED MATTER,2022,34(50).
APA
Lv,Qianqian,Fu,Pei Hao,Zhuang,Quan,Yu,Xiang Long,&Wu,Jiansheng.(2022).Two-dimensional antiferromagnetic nodal-line semimetal and quantum anomalous Hall state in the van der Waals heterostructure germanene/Mn2S2.JOURNAL OF PHYSICS-CONDENSED MATTER,34(50).
MLA
Lv,Qianqian,et al."Two-dimensional antiferromagnetic nodal-line semimetal and quantum anomalous Hall state in the van der Waals heterostructure germanene/Mn2S2".JOURNAL OF PHYSICS-CONDENSED MATTER 34.50(2022).
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2022-QQLv-JPCM-共同通讯.(7877KB) Restricted Access--
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