Topological chiral crystals

ORAL

Abstract

Topological chiral crystals host guaranteed topological crossings in the bulk band structure and can possess Fermi arc surface states that span the entire surface Brillouin zone [1]. These materials can give rise to novel opitcal and magneto-transport response. In this presentation, we discuss recent photoemission experiments exploring the topology of chiral fermions [2]. By combining measurements with ultraviolet and soft x-ray incident photons, we determine the topological invariant directly. Our results shed new light on the relationship between structural chirality and topology.
[1] Sanchez, D. S., Belopolski, I., Cochran, T. A. et al. Nature 567, 500-505 (2019).
[2] Cochran, T. A. et al. (In preparation).

*Work at Princeton was supported by the US DOE under Basic Energy Sciences programme (grant number DOE/BES DE-FG-02-05ER46200) and the Gordon and Betty Moore Foundation (GBMF4547/ Hasan). T.C. was supported by the National Science Foundation Graduate Research Fellowship Program under Grant No. (#DGE-1656466).

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Presenters

  • Tyler Cochran

    • Laboratory for Topological Quantum Matter and Spectroscopy, Department of Physics, Princeton University
    • Princeton University
    • Physics, Princeton University

Authors

  • Tyler Cochran

    • Laboratory for Topological Quantum Matter and Spectroscopy, Department of Physics, Princeton University
    • Princeton University
    • Physics, Princeton University

  • Guoqing Chang

    • Laboratory for Topological Quantum Matter and Spectroscopy, Department of Physics, Princeton University
    • Princeton University

  • Ilya Belopolski

    • Laboratory for Topological Quantum Matter and Spectroscopy, Department of Physics, Princeton University
    • Princeton 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

  • Daniel S Sanchez

    • Princeton University

  • Zijia Cheng

    • Princeton University
    • Tsinghua University

  • Xian Yang

    • Princeton University

  • Daniel Multer

    • Princeton University

  • Songtian Zhang

    • Laboratory for Topological Quantum Matter and Spectroscopy, Department of Physics, Princeton University
    • Princeton University

  • Nana Shumiya

    • Princeton University
    • Physics, Princeton University

  • Maksim Litskevich

    • Princeton University

  • Jiaxin Yin

    • Laboratory for Topological Quantum Matter and Spectroscopy, Department of Physics, Princeton University
    • Princeton University
    • Physics, Princeton University

  • Suyang Xu

    • Massachusetts Institute of Technology
    • Massachusetts Institute of Technology MIT
    • Physics, Massachusetts Institute of Technology
    • Harvard university
    • Harvard University
    • Havard University

  • Claudia Felser

    • Solid State Chemistry, Max Planck Institute for Chemical Physics of Solids
    • Max Planck Institute for Chemical Physics of Solids
    • Max-Planck Institute for Chemical Physics of Solids
    • Max-Planck-Institute for Chemical Physics of Solids
    • Chemical Physics of Solids, Max Planck Institute
    • MPI, Dresden

  • Hsin Lin

    • Academia Sinica
    • Physics, Academia Sinica
    • Institute of Physics, Academia Sinica, Taipei, Taiwan
    • Institute of Physics, Academia Sinica

  • Zahid Hasan

    • Laboratory for Topological Quantum Matter and Spectroscopy, Department of Physics, Princeton University
    • Princeton University
    • Physics, Princeton University