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

2017-09-08

10.1103/PhysRevB.96.121104

PHYSICAL REVIEW B   影响因子和分区

2469-9950

2469-9969

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.

SCI ; EI

英语

第一 ; 通讯

Science, Technology and Innovation Commission of Shenzhen Municipality[JCYJ20160531190054083]

Materials Science ; Physics

Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:000410002000001

AMER PHYSICAL SOC

20191906873714

Calculations ; Chirality ; Momentum ; Surface states ; Topology

Chemistry:801 ; Mathematics:921 ; Combinatorial Mathematics, Includes Graph Theory, Set Theory:921.4 ; Classical Physics; Quantum Theory; Relativity:931 ; High Energy Physics; Nuclear Physics; Plasma Physics:932

PHYSICS

Web of Science

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

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).

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).

Wang, R.,et al."Recipe for generating Weyl semimetals with extended topologically protected features".PHYSICAL REVIEW B 96.12(2017).