Weyl semimetal phase in the non-centrosymmetric compound TaAs

doi:10.1038/NPHYS3425

	Weyl semimetal phase in the non-centrosymmetric compound TaAs
	Yang, L. X.1,2,3,4; Liu, Z. K.5,6 ; Sun, Y.7; Peng, H.3; Yang, H. F.3,8; Zhang, T.1,2,3; Zhou, B.3,4; Zhang, Y.4; Guo, Y. F.3; Rahn, M.3; Prabhakaran, D.3; Hussain, Z.4; Mo, S. -K.4; Felser, C.7; Yan, B.6,7 ; Chen, Y. L.1,2,3,5,6
	2015-09
发表期刊	NATURE PHYSICS
ISSN	1745-2473
卷号	11 期号:9 页码:728-+
发表状态	已发表
DOI	10.1038/NPHYS3425
摘要	Three-dimensional (3D) topological Weyl semimetals (TWSs) represent a state of quantum matter with unusual electronic structures that resemble both a '3D graphene' and a topological insulator. Their electronic structure displays pairs of Weyl points (through which the electronic bands disperse linearly along all three momentum directions) connected by topological surface states, forming a unique arc-like Fermi surface (FS). Each Weyl point is chiral and contains half the degrees of freedom of a Dirac point, and can be viewed as a magnetic monopole in momentum space. By performing angle-resolved photoemission spectroscopy on the non-centrosymmetric compound TaAs, here we report its complete band structure, including the unique Fermi-arc FS and linear bulk band dispersion across the Weyl points, in agreement with the theoretical calculations1,2. This discovery not only confirms TaAs as a 3DTWS, but also provides an ideal platform for realizing exotic physical phenomena (for example, negative magnetoresistance, chiral magnetic effects and the quantum anomalous Hall effect) which may also lead to novel future applications.
收录类别	SCI ; EI
语种	英语
资助项目	Engineering and Physical Sciences Research Council[EP/K04074X/1] ; Engineering and Physical Sciences Research Council[EP/M020517/1]
WOS研究方向	Physics
WOS类目	Physics, Multidisciplinary
WOS记录号	WOS:000360709200014
出版者	NATURE PUBLISHING GROUP
EI入藏号	20190806528125
WOS关键词	TOPOLOGICAL DIRAC SEMIMETAL ; SURFACE FERMI ARCS ; ULTRAHIGH MOBILITY ; MAGNETORESISTANCE ; INSULATORS ; DISCOVERY
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/2146
专题	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_PI研究组_颜丙海组物质科学与技术学院_特聘教授组_陈宇林
通讯作者	Chen, Y. L.
作者单位	1.Tsinghua Univ, Collaborat Innovat Ctr Quantum Matter, State Key Lab Low Dimens Quantum Phys, Beijing 100084, Peoples R China 2.Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China 3.Univ Oxford, Dept Phys, Oxford OX1 3PU, England 4.Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA 5.Diamond Light Source, Didcot OX11 0QX, Oxon, England 6.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 200031, Peoples R China 7.Max Planck Inst Chem Phys Solids, D-01187 Dresden, Germany 8.Chinese Acad Sci, SIMIT, State Key Lab Funct Mat Informat, Shanghai 200050, Peoples R China
通讯作者单位	物质科学与技术学院
推荐引用方式 GB/T 7714	Yang, L. X.,Liu, Z. K.,Sun, Y.,et al. Weyl semimetal phase in the non-centrosymmetric compound TaAs[J]. NATURE PHYSICS,2015,11(9):728-+.
APA	Yang, L. X..,Liu, Z. K..,Sun, Y..,Peng, H..,Yang, H. F..,...&Chen, Y. L..(2015).Weyl semimetal phase in the non-centrosymmetric compound TaAs.NATURE PHYSICS,11(9),728-+.
MLA	Yang, L. X.,et al."Weyl semimetal phase in the non-centrosymmetric compound TaAs".NATURE PHYSICS 11.9(2015):728-+.