Quantum oscillation studies on topological nodal-line semimetal ZrHM (H = Si, Ge, Sn; M = S, Se, Te)

ORAL

Abstract

The breakthrough in the discovery of topological semimetals provides opportunities to explore the exotic properties of relativistic fermions in condensed matter. Among those materials, the Dirac nodal-line semimetal represents one type of topological quantum state which displays Dirac cones along a one-dimensional line, in contrast with the topological nodal point Dirac or Weyl semimetals. Here we report the quantum oscillation studies on the nodal-line semimetals ZrHM (H=Si, Ge, Sn; M=S, Se, Te). We have revealed the signatures of nodal-line states in these materials and studied their evolution with dimensionality and spin-orbit coupling, which varies with the selections of H and M. These properties, plus the availability of atomic thin two-dimensional flakes and varied strength of spin splitting, make ZrHM a tunable platform for investigating topological fermion physics and for further exploration of electronic and spintronic science and applications.

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Presenters

  • Jin Hu

    University of Arkansas-Fayetteville, Tulane University, University of Arkansas, Physics and Engineering physics department, Tulane Univ

Authors

  • Jin Hu

    University of Arkansas-Fayetteville, Tulane University, University of Arkansas, Physics and Engineering physics department, Tulane Univ

  • Yanglin Zhu

    Tulane University, Physics and Engineering physics department, Tulane Univ, Department of Physics and Engineering Physics, Tulane University

  • David Graf

    NHMFL Tallahassee, NHMFL, National High Magnetic Field Lab, National High Magnetic Field Laboratory, National High Magnetic Field Laboratory/Florida State University, Natl High Magnetic Field Lab, NHMFL at Florida State University, Florida State University, National High Magnetic Field Laboratory, Florida State University, Condensed Matter Science, NHMFL

  • Zhiqiang Mao

    Tulane University, Physics and Engineering physics department, Tulane Univ, Department of Physics and Engineering Physics, Tulane University, Tulane Univ, Department of Physics and Engineering Physics , Tulane University