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题名: Ferromagnetic Weyl semimetal phase in a tetragonal structure
作者: 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
刊名: PHYSICAL REVIEW B
发表日期: 2017-11-02
DOI: 10.1103/PhysRevB.96.201102
卷: 96, 期:20
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Physics, Condensed Matter
研究领域[WOS]: Physics
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.
关键词[WOS]: TOTAL-ENERGY CALCULATIONS ;  AUGMENTED-WAVE METHOD ;  TOPOLOGICAL INSULATOR ;  ELECTRON-GAS ;  BASIS-SET ;  STATE
语种: 英语
WOS记录号: WOS:000414318000001
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/149715
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.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

Recommended Citation:
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).
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