Prediction of a magnetic Weyl semimetal without spin-orbit coupling and strong anomalous Hall effect in the Heusler compensated ferrimagnet Ti2MnAl
Shi, Wujun1,2; Muechler, Lukas3; Manna, Kaustuv1; Zhang, Yang1,4; Koepernik, Klaus4,5; Car, Roberto3; van den Brink, Jeroen4; Felser, Claudia1; Sun, Yan1
2018-02-21
Source PublicationPHYSICAL REVIEW B
ISSN2469-9950
Volume97Issue:6
Status已发表
DOI10.1103/PhysRevB.97.060406
AbstractWe predict a magnetic Weyl semimetal in the inverse Heusler Ti2MnAl, a compensated ferrimagnet with a vanishing net magnetic moment and a Curie temperature of over 650 K. Despite the vanishing net magnetic moment, we calculate a large intrinsic anomalous Hall effect (AHE) of about 300 S/cm. It derives from the Berry curvature distribution of the Weyl points, which are only 14 meV away from the Fermi level and isolated from trivial bands. Different from antiferromagnets Mn3X (X = Ge, Sn, Ga, Ir, Rh, and Pt), where the AHE originates from the noncollinear magnetic structure, the AHE in Ti2MnAl stems directly from the Weyl points and is topologically protected. The large anomalous Hall conductivity (AHC) together with a low charge carrier concentration should give rise to a large anomalous Hall angle. In contrast to the Co-based ferromagnetic Heusler compounds, the Weyl nodes in Ti2MnAl do not derive from nodal lines due to the lack of mirror symmetries in the inverse Heusler structure. Since the magnetic structure breaks spin-rotation symmetry, the Weyl nodes are stable without SOC. Moreover, because of the large separation between Weyl points of opposite topological charge, the Fermi arcs extent up to 75% of the reciprocal lattice vectors in length. This makes Ti2MnAl an excellent candidate for the comprehensive study of magneticWeyl semimetals. It is the first example of a material withWeyl points, large anomalous Hall effect, and angle despite a vanishing net magnetic moment.
Indexed BySCI ; EI
Language英语
Funding ProjectDOE[DE-SC0017865]
WOS Research AreaMaterials Science ; Physics
WOS SubjectMaterials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS IDWOS:000425602700001
PublisherAMER PHYSICAL SOC
EI Accession Number20191906874280
EI KeywordsAluminum alloys ; Carrier concentration ; Cobalt compounds ; Electric currents ; Ferrimagnetism ; Magnetic moments ; Magnetic structure ; Manganese alloys ; Ternary alloys ; Titanium alloys ; Topology
EI Classification NumberAluminum Alloys:541.2 ; Titanium and Alloys:542.3 ; Manganese and Alloys:543.2 ; Electricity: Basic Concepts and Phenomena:701.1 ; Magnetism: Basic Concepts and Phenomena:701.2 ; Combinatorial Mathematics, Includes Graph Theory, Set Theory:921.4
WOS KeywordFERMI ARCS ; SURFACE ; INTERFERENCE ; SPINTRONICS ; SIGNATURES ; DISCOVERY ; CANDIDATE ; STATE ; PHASE ; BULK
Original Document TypeArticle
Citation statistics
Cited Times:42[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttps://kms.shanghaitech.edu.cn/handle/2MSLDSTB/18281
Collection物质科学与技术学院_PI研究组_李刚组
硬x射线自由电子激光装置项目
Corresponding AuthorSun, Yan
Affiliation1.Max Planck Inst Chem Phys Solids, D-01187 Dresden, Germany
2.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 200031, Peoples R China
3.Princeton Univ, Dept Chem, Princeton, NJ 08544 USA
4.Leibniz Inst Solid State & Mat Res, D-01069 Dresden, Germany
5.IFW Dresden, POB 270116, D-01171 Dresden, Germany
First Author AffilicationSchool of Physical Science and Technology
Recommended Citation
GB/T 7714
Shi, Wujun,Muechler, Lukas,Manna, Kaustuv,et al. Prediction of a magnetic Weyl semimetal without spin-orbit coupling and strong anomalous Hall effect in the Heusler compensated ferrimagnet Ti2MnAl[J]. PHYSICAL REVIEW B,2018,97(6).
APA Shi, Wujun.,Muechler, Lukas.,Manna, Kaustuv.,Zhang, Yang.,Koepernik, Klaus.,...&Sun, Yan.(2018).Prediction of a magnetic Weyl semimetal without spin-orbit coupling and strong anomalous Hall effect in the Heusler compensated ferrimagnet Ti2MnAl.PHYSICAL REVIEW B,97(6).
MLA Shi, Wujun,et al."Prediction of a magnetic Weyl semimetal without spin-orbit coupling and strong anomalous Hall effect in the Heusler compensated ferrimagnet Ti2MnAl".PHYSICAL REVIEW B 97.6(2018).
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