Topological Electronic Structure and Its Temperature Evolution in Antiferromagnetic Topological Insulator MnBi2Te4<bold> </bold>

doi:10.1103/PhysRevX.9.041040

	Topological Electronic Structure and Its Temperature Evolution in Antiferromagnetic Topological Insulator MnBi2Te4
	Chen, Y. J.1; Xu, L. X.2,3,4,5; Li, J. H.1; Li, Y. W.6; Zhang, C. F.2,3,5; Li, H.7; Wu, Y.8,9,10; Liang, A. J.1,9,10; Chen, C.2,3,11 ; Jung, S. W.2,3,11; Cacho, C.12; Wang, H. Y.12; Mao, Y. H.7; Liu, S.2,3 ; Wang, M. X.2,3 ; Guo, Y. F.2,3 ; Xu, Y.1,13,14; Liu, Z. K.2,3 ; Yang, L. X.1,13; Chen, Y. L.1,2,3,6
	2019-11-21
发表期刊	PHYSICAL REVIEW X
ISSN	2160-3308
卷号	9 期号:4
发表状态	已发表
DOI	10.1103/PhysRevX.9.041040
摘要	The intrinsic magnetic topological insulator MnBi2Te4 exhibits rich topological effects such as quantum anomalous Hall effect and axion electrodynamics. Here, by combining the use of synchrotron and laser light sources, we carry out comprehensive and high-resolution angle-resolved photoemission spectroscopy studies on MnBi2Te4 and clearly identify its topological electronic structure. In contrast to theoretical predictions and previous studies, we observe topological surface states with diminished gap forming a characteristic Dirac cone. We argue that the topological surface states are mediated by multidomains of different magnetization orientations. In addition, the temperature evolution of the energy bands clearly reveals their interplay with the magnetic phase transition by showing interesting differences between the bulk and surface states, respectively. The investigation of the detailed electronic structure of MnBi2Te4 and its temperature evolution provides important insight into not only the exotic properties of MnBi2Te4, but also the generic understanding of the interplay between magnetism and topological electronic structure in magnetic topological quantum materials.
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收录类别	SCI ; SCIE ; EI
语种	英语
资助项目	Shanghai Pujiang Program[17PJ1406200]
WOS研究方向	Physics
WOS类目	Physics, Multidisciplinary
WOS记录号	WOS:000498062600003
出版者	AMER PHYSICAL SOC
EI入藏号	20200408065673
EI主题词	Bismuth compounds ; Electric insulators ; Electronic structure ; Light sources ; Manganese compounds ; Photoelectron spectroscopy ; Quantum Hall effect ; Surface states ; Tellurium compounds ; Topological insulators
EI分类号	Combinatorial Mathematics, Includes Graph Theory, Set Theory:921.4 ; Classical Physics; Quantum Theory; Relativity:931
WOS关键词	REALIZATION
原始文献类型	Article
引用统计
文献类型	期刊论文
条目标识符	https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/102259
专题	物质科学与技术学院_PI研究组_郭艳峰组物质科学与技术学院_PI研究组_柳仲楷组物质科学与技术学院_特聘教授组_陈宇林物质科学与技术学院_硕士生物质科学与技术学院_公共科研平台_拓扑物理实验室大科学中心_公共科研平台_大科学装置建设部
通讯作者	Liu, Z. K.
作者单位	1.Tsinghua Univ, Dept Phys, State Key Lab Low Dimens Quantum Phys, Beijing 100084, Peoples R China 2.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China 3.CAS Shanghai Sci Res Ctr, Shanghai 201210, Peoples R China 4.Chinese Acad Sci, Ctr Excellence Superconducting Elect, Shanghai Inst Microsyst & Informat Technol, State Key Lab Funct Mat Informat, Shanghai 200050, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 6.Univ Oxford, Dept Phys, Clarendon Lab, Parks Rd, Oxford OX1 3PU, England 7.Natl Univ Def Technol, Coll Adv Interdisciplinary Studies, Changsha 410073, Hunan, Peoples R China 8.Tsinghua Univ, Sch Mat Sci & Engn, Beijing 10084, Peoples R China 9.Tsinghua Univ, Dept Mech Engn, Beijing 100084, Peoples R China 10.Tsinghua Univ, Tsinghua Foxconn Nanotechnol Res Ctr, Beijing 100084, Peoples R China 11.Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA 12.Diamond Light Source, Harwell Campus, Didcot OX11 0DE, Oxon, England 13.Frontier Sci Ctr Quantum Informat, Beijing 100084, Peoples R China 14.RIKEN, CEMS, Wako, Saitama 3510198, Japan
通讯作者单位	物质科学与技术学院
推荐引用方式 GB/T 7714	Chen, Y. J.,Xu, L. X.,Li, J. H.,et al. Topological Electronic Structure and Its Temperature Evolution in Antiferromagnetic Topological Insulator MnBi2Te4 [J]. PHYSICAL REVIEW X,2019,9(4).
APA	Chen, Y. J..,Xu, L. X..,Li, J. H..,Li, Y. W..,Zhang, C. F..,...&Chen, Y. L..(2019).Topological Electronic Structure and Its Temperature Evolution in Antiferromagnetic Topological Insulator MnBi2Te4 .PHYSICAL REVIEW X,9(4).
MLA	Chen, Y. J.,et al."Topological Electronic Structure and Its Temperature Evolution in Antiferromagnetic Topological Insulator MnBi2Te4 ".PHYSICAL REVIEW X 9.4(2019).