Topological crystalline insulators and Dirac octets in antiperovskites

Hsieh, Timothy H.; Liu, Junwei; Fu, Liang

doi:10.1103/physrevb.90.081112

Title: Topological crystalline insulators and Dirac octets in antiperovskites

Journal Article · 20 August 2014 · Physical Review. B, Condensed Matter and Materials Physics

DOI: https://doi.org/10.1103/physrevb.90.081112 · OSTI ID:1505782

Hsieh, Timothy H. ^[1]; Liu, Junwei ^[1]; Fu, Liang ^[1]

Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)

We predict a class of topological crystalline insulators in the antiperovskite material family with the chemical formula A₃BX. 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.” Furthermore 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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Research Organization:: Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; USDOE

Grant/Contract Number:: SC0010526

OSTI ID:: 1505782

Alternate ID(s):: OSTI ID: 1180165

Journal Information:: Physical Review. B, Condensed Matter and Materials Physics, Vol. 90, Issue 8; ISSN 1098-0121

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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