Three-dimensional topological insulators:case of quaternary Heusler compounds

• 作者: Xiao-Tian Wang Xue-Fang Dai Hong-Ying Jia Li-Ying Wang Guo-Dong Liu Xi-Feng Liu Wen Yuan Yu-Ting Cui
• 来源期刊: 稀有金属（英文版）
• 年，卷（期）: 2021,（5）
• 所属期刊栏目: ORIGINAL ARTICLES
• 页码范围: 1219-1223
• 页数: 5页
• 语种: 英文

摘要

The feasibility of converting quaternary Heus-ler compounds XX'MZ(X=Sc,La;X'=Sc,Y;M=Ru,Fe;Z=Pb)into three-dimensional topological insulators was investigated by first-principle calculations.It is found that the topological insulating state can be achieved in these quaternary Heusler compounds by the proper strain engi-neering or the substitution of elements.Most of these compounds investigated in this paper have a negative for-mation energy,which implies that they are possible to be synthesized in reality.