publication . Preprint . 2014

Topological Crystalline Insulators and Dirac Octets in Anti-perovskites

Hsieh, Timothy H.; Liu, Junwei; Fu, Liang;
Open Access English
  • Published: 17 Jul 2014
Abstract
We predict a new class of topological crystalline insulators (TCI) in the anti-perovskite 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 anti-perovskites are a promising new venue for exploring the cooperative interplay between band topology, crystal symmetry and electron correlation.
Subjects
free text keywords: Condensed Matter - Strongly Correlated Electrons, Condensed Matter - Materials Science
Funded by
NSF| GRADUATE RESEARCH FELLOWSHIP PROGRAM
Project
  • Funder: National Science Foundation (NSF)
  • Project Code: 0645960
  • Funding stream: Directorate for Education & Human Resources | Division of Graduate Education
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