Breaking time reversal symmetry in topological insulators

Cui Zu Chang, Peng Wei, Jagadeesh S. Moodera

Research output: Contribution to journalArticle

19 Scopus citations

Abstract

A wide class of materials that were discovered to carry a topologically protected phase order has led to a highly active area of research called topological insulators (TIs). This phenomenon has radically changed our thinking because of the robust quantum coherent behavior showing two-dimensional Dirac-type metallic surface states (SSs) and simultaneously insulating bulk states. The Dirac SSs are induced by the strong spin-orbit coupling as well as protected by time reversal symmetry (TRS). Breaking TRS in a TI with ferromagnetic perturbation can lead to many exotic quantum phenomena, such as the quantum anomalous Hall effect, topological magnetoelectric effect, as well as image magnetic monopole. This article presents an overview of the current status of TRS breaking in TIs and outlines the prospects for future studies.

Original languageEnglish (US)
Pages (from-to)867-872
Number of pages6
JournalMRS Bulletin
Volume39
Issue number10
DOIs
StatePublished - Oct 15 2014

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

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