Ferromagnetic Weyl semimetal phase in a tetragonal structure
Jin, Y. J.1; Wang, R.1,2,3; Chen, Z. J.1,4; Zhao, J. Z.1,5; Zhao, Y. J.4; Xu, H.1
Source PublicationPHYSICAL REVIEW B
Indexed BySCI
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectPhysics, Condensed Matter
WOS Research AreaPhysics
AbstractMagnetic topological semimetals have drawn significant interest since they can combine band topology with intrinsic magnetic order. Here, we propose that ideal Weyl semimetal features can coexist with a ferromagnetic (FM) ground state in a class of compounds with centrosymmetric tetragonal structures. In this magnetic system with inversion symmetry, the direction of magnetization is able to manipulate the symmetry protected band structures from a node-line type to a Weyl one in the presence of spin-orbital coupling. The FM node-line semimetal phase is protected by mirror symmetry with the reflection-invariant plane perpendicular to the magnetic order. Within mirror symmetry breaking due to magnetization along other directions, the gapless node-line loop will degenerate to only one pair of Weyl points protected by rotational symmetry along the magnetic axis, which is largely separated in momentum space. Such a FM Weyl semimetal phase offers a nice platform with a minimum number of Weyl points in a condensed matter system. These findings provide several realistic candidates for the investigation of topological semimetals with time-reversal symmetry breaking, especially demonstrating the use of system symmetry as a powerful recipe for discovering FM Weyl semimetals with attractive features.
WOS IDWOS:000414318000001
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Document Type期刊论文
Affiliation1.South Univ Sci & Technol China, Dept Phys, Shenzhen 518055, Peoples R China
2.Chongqing Univ, Inst Struct & Funct, Chongqing 400044, Peoples R China
3.Chongqing Univ, Dept Phys, Chongqing 400044, Peoples R China
4.South China Univ Technol, Dept Phys, Guangzhou 510640, Guangdong, Peoples R China
5.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
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GB/T 7714
Jin, Y. J.,Wang, R.,Chen, Z. J.,et al. Ferromagnetic Weyl semimetal phase in a tetragonal structure[J]. PHYSICAL REVIEW B,2017,96(20).
APA Jin, Y. J.,Wang, R.,Chen, Z. J.,Zhao, J. Z.,Zhao, Y. J.,&Xu, H..(2017).Ferromagnetic Weyl semimetal phase in a tetragonal structure.PHYSICAL REVIEW B,96(20).
MLA Jin, Y. J.,et al."Ferromagnetic Weyl semimetal phase in a tetragonal structure".PHYSICAL REVIEW B 96.20(2017).
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