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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).

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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