Ferromagnetic Weyl semimetal phase in a tetragonal structure

	Ferromagnetic Weyl semimetal phase in a tetragonal structure
	Zhao, Y. J.5; Jin, Y. J.3; Wang, R.1,3,4; Chen, Z. J.3,5; Zhao, J. Z.2,3; Xu, H.3
刊名	PHYSICAL REVIEW B
	2017-11-02
卷号	96 期号:20
英文摘要	Magnetic 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标题词	Science & Technology ; Physical Sciences
类目[WOS]	Physics, Condensed Matter
研究领域[WOS]	Physics
关键词[WOS]	TOTAL-ENERGY CALCULATIONS ; AUGMENTED-WAVE METHOD ; TOPOLOGICAL INSULATOR ; ELECTRON-GAS ; BASIS-SET ; STATE
收录类别	SCI
语种	英语
WOS记录号	WOS:000414318000001
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/149715]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
作者单位	1.Chongqing Univ, Dept Phys, Chongqing 400044, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China 3.South Univ Sci & Technol China, Dept Phys, Shenzhen 518055, Peoples R China 4.Chongqing Univ, Inst Struct & Funct, Chongqing 400044, Peoples R China 5.South China Univ Technol, Dept Phys, Guangzhou 510640, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Y. J.,Jin, Y. J.,Wang, R.,et al. Ferromagnetic Weyl semimetal phase in a tetragonal structure[J]. PHYSICAL REVIEW B,2017,96(20).
APA	Zhao, Y. J.,Jin, Y. J.,Wang, R.,Chen, Z. J.,Zhao, J. Z.,&Xu, H..(2017).Ferromagnetic Weyl semimetal phase in a tetragonal structure.PHYSICAL REVIEW B,96(20).
MLA	Zhao, Y. J.,et al."Ferromagnetic Weyl semimetal phase in a tetragonal structure".PHYSICAL REVIEW B 96.20(2017).