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Recipe for generating Weyl semimetals with extended topologically protected features
Wang, R.1,2,3; Zhao, J. Z.1,4; Jin, Y. J.1; Xu, W. P.1; Gan, L. -Y.1,5; Wu, X. Z.1,2,3; Xu, H.1; Tong, S. Y.1,6
刊名PHYSICAL REVIEW B
2017-09-08
DOI10.1103/PhysRevB.96.121104
96期:12
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
关键词[WOS]TOTAL-ENERGY CALCULATIONS ; AUGMENTED-WAVE METHOD ; ELECTRON-GAS ; BASIS-SET ; INSULATORS ; NEUTRINOS ; ABSENCE ; LATTICE ; PROOF
英文摘要We present a recipe that leads to Weyl semimetals with extended topologically protected features. We show that compounds in a family that possess time-reversal symmetry and share a noncentrosymmetric cubic structure with the space group F-43m (no. 216) host robust Weyl fermions with extended and easily measurable protected features. The candidates in this family are compounds with different chemical formulas, AB2, ABC, ABC2, and ABCD, and their Fermi levels are predominantly populated by nontrivial Weyl fermions. Symmetry of the system requires that the Weyl nodes with opposite chirality are well separated in momentum space. Adjacent Weyl points have the same chirality; thus these Weyl nodes would not annihilate each other with respect to lattice perturbations. As Fermi arcs and surface states connect Weyl nodes with opposite chirality, the large separation of the latter in momentum space guarantees the appearance of very long arcs and surface states. This work demonstrates that the use of system symmetry by first-principles calculations is a powerful approach for discovering new Weyl semimetals with attractive features whose protected fermions may be candidates of many applications.
语种英语
WOS记录号WOS:000410002000001
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文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/149995
专题中国科学院大连化学物理研究所
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.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
5.Southwest Jiaotong Univ, Superconduct & New Energy R&D Ctr, Key Lab Adv Technol Mat, Minist Educ, Chengdu 610031, Sichuan, Peoples R China
6.Chinese Univ Hong Kong Shenzhen, Sch Sci & Engn, Shenzhen 518172, Peoples R China
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Wang, R.,Zhao, J. Z.,Jin, Y. J.,et al. Recipe for generating Weyl semimetals with extended topologically protected features[J]. PHYSICAL REVIEW B,2017,96(12).
APA Wang, R..,Zhao, J. Z..,Jin, Y. J..,Xu, W. P..,Gan, L. -Y..,...&Tong, S. Y..(2017).Recipe for generating Weyl semimetals with extended topologically protected features.PHYSICAL REVIEW B,96(12).
MLA Wang, R.,et al."Recipe for generating Weyl semimetals with extended topologically protected features".PHYSICAL REVIEW B 96.12(2017).
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