Classification of Interacting Electronic Topological Insulators in Three Dimensions

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  • Chong Wang
    Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
  • Andrew C. Potter
    Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
  • T. Senthil
    Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.

Abstract

<jats:title>Interacting and Topological</jats:title> <jats:p> Topological insulators (TIs), which have a bandgap and a robust conducting surface state protected by time-reversal symmetry, are typically materials with weak electron-electron interaction and are well-described by band theory. A major experimental goal has been to observe such symmetry-protected topological (SPT) phases in interacting systems. <jats:bold> Wang <jats:italic>et al.</jats:italic> </jats:bold> (p. <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" issue="6171" page="629" related-article-type="in-this-issue" vol="343" xlink:href="10.1126/science.1243326">629</jats:related-article> ) used a theoretical approach to classify SPT phases of interacting fermions in three dimensions and found six other phases in addition to the noninteracting ones. The results lay the groundwork for future microscopic models and inform the experimental search for such materials. </jats:p>

Journal

  • Science

    Science 343 (6171), 629-631, 2014-02-07

    American Association for the Advancement of Science (AAAS)

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