Tuning topological phases in the \textit{X}MnSb$_2$ system via chemical substitution from first principles

ORAL

Abstract

New Dirac materials are sought for their interesting fundamental physics and for their potential technological applications. Protected symmetries offer a route to potential zero mass Dirac and Weyl fermions, and can lead unique transport properties and spectroscopic signatures. In this work, we use first-principles calculations to study the \textit{X}MnSb$_2$ family of materials and show how varying \textit{X} changes the nature of bulk protected topological features in their electronic structure. We further discuss new design rules for predicting new topological materials suggested by our calculations.

*SG is supported by the Early Postdoc Mobility Fellowship of the SNF

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Authors

  • Sinead Griffin

    • Department of Physics, UC Berkeley & Molecular Foundry, LBNL
    • Department of Physics, UC Berkeley; Molecular Foundry, LBNL

  • Jeffrey B. Neaton

    • Department of Physics, UC Berkeley; Molecular Foundry, LBNL
    • Department of Physics, UC Berkeley & Molecular Foundry, LBNL
    • Department of Physics, UC Berkeley; Molecular Foundry, LBNL; Kavli Energy NanoScience Institute
    • Department of Physics, University of California, Berkeley
    • Lawrence Berkeley National Laboratory
    • Molecular Foundry, LBNL; Dept. of Physics, UC Berkeley; Kavli ENSI
    • LBNL
    • Univ of California - Berkeley, Lawrence Berkeley National Lab
    • Physics, UC Berkeley, and Molecular Foundry, LBNL
    • University of California
    • Molecular Foundry, Lawrence Berkeley National Lab; Dept. of Physics, University of California Berkeley; Kavli NanoScience Institute, Berkeley, CA, USA
    • Department of Physics, UC Berkeley; Molecular Foundry, LBNL; Kavli Energy NanoSciences Institute at Berkeley
    • Physics Department, UC Berkeley; Molecular Foundry, Lawrence Berkeley National Lab; Kavli Energy NanoSciences Institute at Berkeley