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Coexistence of topological nontrivial phase and Rashba-type surface state in HoSb

ORAL

Abstract

Using the high resolution angle-resolved photoemission spectroscopy (ARPES), magnetotransport, and parallel first-principles modeling, we report the discovery of a topologically nontrivial state coexisting with a Rashba-type surface state in a rare earth monopnictide semimetal. Our theoretical analysis reveals the presence of bulk band inversions at the Γ and X points of the Brillouin zone (BZ). Interestingly, the upper part of the observed Rashba-type surface state coincides with the nontrivial surface state at the X point. Magnetotransport study indicates that HoSb can be characterized as a correlated nearly-complete electron-hole-compensated semimetal. Therefore, our findings provide HoSb as a new materials platform for exploring the interplay between coexisting topological and Rashba-type surface state and the non-saturating XMR effect in the rare earth monopnictide family.

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Presenters

  • Md Mofazzel Hosen

    Univ of Central Florida, University of Central Florida

Authors

  • Md Mofazzel Hosen

    Univ of Central Florida, University of Central Florida

  • Gyanendra Dhakal

    Univ of Central Florida, Physics, University of Central Florida, University of Central Florida

  • Baokai Wang

    Northeastern University, Physics, Northeastern University

  • Narayan Poudel

    Texas Center for Superconductivity and Department of Physics, University of Houston, Houston, TX 77204, USA, Texas Center for Superconductivity, University of Houston, Idaho National Laboratory

  • Bahadur Singh

    Northeastern University, Physics, Northeastern University, SZU-NUS Collaborative Center, ShenZhen University, Department of Physics, Northeastern University

  • Klauss Dimitri

    Univ of Central Florida, Physics, University of Central Florida, University of Central Florida

  • Firoza Kabir

    Univ of Central Florida, Physics, University of Central Florida, University of Central Florida

  • Christopher Sims

    Univ of Central Florida, Physics, University of Central Florida, University of Central Florida

  • Sabin Regmi

    Univ of Central Florida, Physics, University of Central Florida, University of Central Florida

  • William Neff

    Univ of Central Florida, University of Central Florida

  • Daniel Murray

    Idaho National Laboratory

  • Franziska Weickert

    Los Alamos National Laboratory, National High Magnetic Field Laboratory

  • Krzysztof Gofryk

    Idaho national lab, Idaho National Laboratory

  • Orest Pavlosiuk

    Polish Academy of Sciences

  • Piotr Wisniewski

    Polish Academy of Sciences

  • Dariusz Kaczorowski

    Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Polish Academy of Sciences

  • Arun Bansil

    Northeastern University, Physics, Northeastern University

  • Madhab Neupane

    Univ of Central Florida, University of Central Florida, Physics, University of Central Florida