Nonsymmorphic Symmetry-Protected Band Crossings in a Correlated Metal

ORAL

Abstract

Topological semimetals in which the bulk bands cross at points without opening an energy gap have emerged as a particularly rich platform to explore novel electronic phenomena. In nodal line semimetals, the bulk band linear crossings extend from discrete points to continuous lines or loops in momentum space. Crystalline symmetries, such as nonsymmorphic symmetry, can play a crucial role in protecting the band crossings along a continuous line or loop in momentum space in TSM. Nonsymmorphic symmetry will generate a band folding with crossings at the Brillouin zone (BZ) boundaries that are protected against spin orbital coupling. Here we will present our recent combined theory and angle-resolved photoemission spectroscopy study on PtPb4. We will show the existence of nonsymmorphic symmetry protected Dirac nodal lines in this material system as well as demonstrate the effect of moderate electron correlations on the measured band structure.

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Presenters

  • Han Wu

    • Department of Physics and Astronomy, Rice University
    • Department of Physics and Astronomy, Rice Univ
    • Department of Physics and Astronomy and Rice Center for Quantum Materials, Rice Univ

Authors

  • Han Wu

    • Department of Physics and Astronomy, Rice University
    • Department of Physics and Astronomy, Rice Univ
    • Department of Physics and Astronomy and Rice Center for Quantum Materials, Rice Univ

  • Alannah Hallas

    • University of British Columbia
    • Department of Physics and Astronomy and Quantum Matter Institute, University of British Columbia

  • Xiaochan Cai

    • School of Physical Science and Technology, ShanghaiTech University

  • Jianwei Huang

    • Department of Physics and Astronomy, Rice University
    • Department of Physics and Astronomy, Rice Univ
    • Department of Physics and Astronomy and Rice Center for Quantum Materials, Rice Univ

  • Vaideesh Loganathan

    • Rice Univ
    • Department of Physics and Astronomy and Rice Center for Quantum Materials, Rice Univ

  • Ashley Weiland

    • Department of Chemistry & Biochemistry, University of Texas at Dallas

  • Gregory McCandless

    • Chemistry, University of Texas at Dallas
    • Department of Chemistry & Biochemistry, University of Texas at Dallas

  • Julia Y Chan

    • Chemistry, University of Texas Dallas
    • Chemistry, University of Texas at Dallas
    • Department of Chemistry & Biochemistry, University of Texas at Dallas

  • Sung-Kwan Mo

    • Lawrence Berkeley National Laboratory
    • Advanced Light Source, Lawrence Berkeley National Laboratory
    • Advanced Light Source

  • Donghui Lu

    • SLAC - Natl Accelerator Lab
    • SLAC National Accelerator Laboratory, Stanford Synchrotron Radiation Lightsource
    • SLAC
    • Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory
    • SLAC National Accelerator Laboratory,
    • SLAC National Accelerator Laboratory

  • Makoto Hashimoto

    • SLAC - Natl Accelerator Lab
    • SLAC National Accelerator Laboratory, Stanford Synchrotron Radiation Lightsource
    • SLAC
    • Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory
    • SLAC National Accelerator Laboratory,
    • SLAC National Accelerator Laboratory

  • Andriy Nevidomskyy

    • Department of Physics and Astronomy, Rice University
    • Rice Univ
    • Department of Physics and Astronomy, Rice University, TX, USA
    • Rice Center for Quantum Materials, Rice University
    • Rice University
    • Department of Physics and Astronomy and Rice Center for Quantum Materials, Rice Univ
    • Physics and Astronomy, Rice University

  • Gang Li

    • School of Physical Science and Technology, ShanghaiTech University
    • ShanghaiTech University

  • Emilia Morosan

    • Rice Univ
    • Department of Physics and Astronomy and Rice Center for Quantum Materials, Rice Univ
    • Rice University
    • Department of Physics and Astronomy, Rice University

  • Ming Yi

    • Rice University
    • Rice Univ
    • Department of Physics and Astronomy, Rice University
    • Department of Physics and Astronomy, Rice Univ
    • Department of Physics and Astronomy and Rice Center for Quantum Materials, Rice Univ