SHG spectroscopy of the surface states of a chiral Weyl semimetal

ORAL

Abstract

Second harmonic generation (SHG) is an optical effect that has recently been extensively used to study the electronic band structure as well as lattice and electronic symmetry of various inversion-symmetry breaking solid state materials, including topological systems. Since the surface of any material is a locus of inversion symmetry breaking, SHG spectroscopy has traditionally been used to selectively probe the surface electronic properties of materials. We present an SHG study of a chiral Weyl semimetal as a function of incident photon energy to study SHG response deriving solely from the surface and discuss what our analysis of the nonlinear tensor elements reveals on the topological nature of the material.

*Gordon and Betty Moore Foundation’s EPiQs Initiative, Grant No. GBMF4537.
Quantum Materials program supported by the Director, Office of Science, Office of Basic Energy Sciences, Materials Sciences and Engineering Division, of the U.S. Department of Energy under Contract No. DE-AC02- 05CH11231.
ERC Advanced 20 Grant No. 742068 “TOPMAT”

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Presenters

  • Dylan Rees

    • University of California, Berkeley
    • Department of Physics, University of California, Berkeley
    • University of California, Berkeley and LBL

Authors

  • Dylan Rees

    • University of California, Berkeley
    • Department of Physics, University of California, Berkeley
    • University of California, Berkeley and LBL

  • Baozhu Lu

    • Temple University
    • Temple Univ
    • Department of Physics, Temple University

  • Kaustuv Manna

    • Solid State Chemistry, Max Planck Institute Chemical Physics of Solids
    • Max Planck Institute for Chemical Physics of Solids
    • Max-Planck-Institute for Chemical Physics of Solids , Nöthnitzer Straße-40, 01187 Dresden, Germany
    • Max-Planck-Institute for Chemical Physics of Solids
    • MPI, Dresden

  • Claudia Felser

    • Max Planck Institute for Chemical Physics of Solids
    • MPI-CPfS Dresden
    • Max Planck Institute For Chemical and Physical Solids
    • MPI for chemical physics of solids, Dresden
    • Solid State Chemistry, Max Planck Institute Chemical Physics of Solids
    • Max Planck Institute
    • Max-Planck-Institute for Chemical Physics of Solids , Nöthnitzer Straße-40, 01187 Dresden, Germany
    • Max Planck Inst
    • Max Planck Dresden
    • Chemical Physics of Solids, Max Planck Institute

  • Joseph Orenstein

    • University of California, Berkeley
    • physics, University of California, Berkeley
    • Department of Physics, University of California, Berkeley
    • University of California, Berkeley and LBL

  • Darius Torchinsky

    • Temple University
    • Temple Univ
    • Department of Physics, Temple University