Fermi surface topology of LaAs revealed by magneto-transport, ARPES and first-principles calculation

ORAL

Abstract

Recently, the first principles calculation has predicted that rock-salt-structured lanthanum monopnictides LaX (X=N, P, As, Sb and Bi) show band inversion, resulting in non-trivial topology. Transport and ARPES studies have been extensively performed for LaBi and LaSb. While the study of LaBi has pointed to its non-trivial topology, the investigation of LaSb has led to highly controversial results, which may suggest the importance of the spin-orbit coupling of the pnictide in affecting the band inversion. To shed light on this issue, we studied the lighter version of the system, LaAs. In this talk, we will present a combined study of quantum oscillation, ARPES and first-principles calculations on the cubic semimetal LaAs. And the Fermi surface topology of LaAs will be discussed in details.

*Work at UCLA was supported by DOE award DE-SC0011978. Work at Rutgers was supported by NSF award DMR-1435918.

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Presenters

  • Xiaoyu Deng

    • Physics and Astronomy, rutgers university

Authors

  • Ni Ni

    • Physics, University of California at Los Angeles
    • Physics and Astronomy, Univ of California - Los Angeles
    • Department of Physics and Astronomy and California NanoSystems Institute, University of California, Los Angeles
    • Department of Physics and Astronomy , Univ of California - Los Angeles

  • Bing Shen

    • Physics, University of California at Los Angeles
    • Department of Physics and Astronomy and California NanoSystems Institute, University of California, Los Angeles
    • Physics, University of California, Los Angeles
    • Physics and Astronomy, Univ of California - Los Angeles

  • xiaoming ma

    • Physics, Southern University of Science and Technology

  • Xiaoyu Deng

    • Physics and Astronomy, rutgers university

  • Eve Emmanouilidou

    • Physics, University of California at Los Angeles
    • Department of Physics and Astronomy , Univ of California - Los Angeles
    • Physics and Astronomy, Univ of California - Los Angeles

  • Gabriel Kotliar

    • CMPMS, Brookhaven national lab
    • Department of Physics and Astronomy, Rutgers University
    • Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08856, USA
    • Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory
    • Rutgers University
    • Condensed Matter Physics and Materials Science Department, Brookhaven National Lab
    • Physics and Astronomy Department, Rutgers University
    • Physics and Astronomy, rutgers university

  • Chang Liu

    • Southern University of Science and Technology
    • Physics, Southern University of Science and Technology