Topological crystalline insulators and Dirac octets in antiperovskites

被引：145

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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