Topological crystalline insulators and Dirac octets in antiperovskites

被引：144
|
作者：
Hsieh, Timothy H. [1 ]
Liu, Junwei [1 ]
Fu, Liang [1 ]
机构：
[1] MIT, Dept Phys, Cambridge, MA 02139 USA
来源：
PHYSICAL REVIEW B | 2014年 / 90卷 / 08期
关键词：
TOTAL-ENERGY CALCULATIONS; AUGMENTED-WAVE METHOD; PHASE-TRANSITION; BASIS-SET; HETEROSTRUCTURES; INTERFACE; METALS; SNTE;
D O I：
10.1103/PhysRevB.90.081112
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We predict a class of topological crystalline insulators in the antiperovskite material family with the chemical formula A(3)BX. Here the nontrivial topology arises from band inversion between two J = 3/2 quartets, which is described by a generalized Dirac equation for a "Dirac octet." Our work suggests that antiperovskites are a promising venue for exploring the cooperative interplay between band topology, crystal symmetry, and electron correlation.
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页数：5
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