Ab initio Studies of Filling-enforced Nodal Semimetals

ORAL

Abstract

We present a new search criterion for nodal semimetals based on electron filling and symmetries. With this new criterion, several material candidates are discovered using ab initio calculations and experimentally characterized material databases. We discuss specific material candidates, such as filling-enforced Dirac semimetals and Dirac nodal-line semimetals.

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Authors

  • Ru Chen

    • Lawrence Berkeley National Laboratory
    • Department of Physics, UC Berkeley; Molecular Foundry, LBNL
    • Lawrence Berkeley National Lab; University of California, Berkeley

  • Hoi Chun Po

    • Harvard University; University of California, Berkeley

  • Jeffrey B. Neaton

    • Lawrence Berkeley National Lab; University of California, Berkeley

  • Ashvin Vishwanath

    • Harvard University; University of California, Berkeley