Open AccessThe band inversion and topological insulating state of Heusler alloys：X2RuPb (X=Lu, Y)
Author(s) -
Xiaotian Wang,
Xianying Dai,
Jia Hong-Ying,
Liying Wang,
Ran Liu,
Yong Li,
Liu Xiao-Chuang,
Xiaoming Zhang,
Wenhong Wang,
Guangheng Wu,
Guodong Liu
Publication year - 2014
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.63.023101
Subject(s) - topological insulator , doping , materials science , condensed matter physics , lattice (music) , electronic structure , deformation (meteorology) , topology (electrical circuits) , physics , mathematics , combinatorics , acoustics , composite material
The electronic structures of Heusler alloys X2RuPb (X=Lu, Y) under different conditions are investigated using the first-principles calculations. It is found that the alloys become the real topological insulators under a proper lattice deformation or doping. The spin-orbital coupling and the interatomic hybridization effect reinforce each other to perform the band inversion in X2RuPb (X=Lu, Y) compounds and they play roles to different degrees for the materials with different compositions. The ideal topological insulators are easier to obtain using simultaneously lattice deformation and doping artifices, which is available in practical material preparation.