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
Source PublicationNATURE PHYSICS
AbstractThree-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.
Indexed BySCI ; EI
Funding ProjectEngineering and Physical Sciences Research Council[EP/K04074X/1] ; Engineering and Physical Sciences Research Council[EP/M020517/1]
WOS Research AreaPhysics
WOS SubjectPhysics, Multidisciplinary
WOS IDWOS:000360709200014
EI Accession Number20190806528125
Original Document TypeArticle
Citation statistics
Cited Times:649[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorChen, Y. L.
Affiliation1.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
Corresponding Author AffilicationSchool of Physical Science and Technology
Recommended Citation
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-+.
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