Fermiology and transport properties of a proposed topological crystalline insulator

ORAL

Abstract

Compared to Z2 topological insulators and Dirac/Weyl semimetals, there are much fewer topological crystalline insulator candidates. SrAg4Sb2 is predicted to be a topological crystalline insulator when spin-orbit coupling is taken into account. In this talk, I will present a study on single crystals of SrAg4Sb2 using electrical transport, magnetic torque and first-principles calculations. Our measurements show quantum oscillations above 3 T. The comparison of the Fermi pockets obtained from our quantum oscillations and the DFT calculations show good agreement, supporting SrAg4Sb2 being a topological crystalline insulator candidate.

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Presenters

  • J Green

    University of California, Los Angeles

Authors

  • J Green

    University of California, Los Angeles

  • Eve Emmanouilidou

    University of California, Los Angeles

  • Harry Morgan

    UCLA

  • William Laderer

    UCLA

  • Chaowei Hu

    University of Washington, Seattle, University of Washington

  • Jonathan J Loera

    University of California, Merced

  • Anastassia Alexandrova

    UCLA

  • Ni Ni

    University of California, Los Angeles