Charge Density Waves as a Tool to Achieve Idealized Topological Semimetals

ORAL

Abstract

Topological materials have been the source of many exciting new discoveries. The fast development of high throughput materials search programs has led to the identification of many topological materials in inorganic materials database. Despite the rapid progress, many topological materials that have been discovered suffer from non-ideal band structures, i.e. the topological bands are frequently convoluted with trivial ones, and band structure features of interest can appear far below the Fermi level. One strategy that has been utilized to achieve "better" topological materials has been chemical doping, which can shift the chemical potential to the points of interest. This strategy, however, does not help to remove interfering bands from the Fermi level. Here we introduce a new strategy to design nearly idealized topological semimetals, by taking advantage of a charge density wave (CDW) and non-symmorphic symmetry. We further show experimental verification of this strategy in single crystals of GdSbxTe2-x-δ by studying the electronic structure with angle-resolved photoemission spectroscopy (ARPES).

*This research was supported by the Arnold and Mabel Beckman Foundation through a Beckman Young Investigator grant awarded to L.M.S.

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Presenters

  • Shiming Lei

    • Princeton University
    • Rice Univ

Authors

  • Shiming Lei

    • Princeton University
    • Rice Univ

  • Samuel M. L. Teicher

    • University of California, Santa Barbara

  • Andreas Topp

    • Max-Planck-Institut für Festkörperforschung
    • Max Planck Institute for Solid State Research

  • Kehan Cai

    • Princeton University

  • Jingjing Lin

    • Princeton University

  • Fanny Rodolakis*

    • Argonne National Laboratory, Advanced Photon Source
    • Argonne National Laboratory

  • Jessica L McChesney

    • Argonne National Laboratory, Advanced Photon Source
    • Advanced Photon Source, Argonne National Laboratory, Lemont, IL, 60439, USA
    • Argonne National Laboratory

  • Maxim Krivenkov

    • Helmholtz-Zentrum Berlin für Materialien und Energie
    • Helmholtz-Zentrum Berlin fuer Materialien und Energie

  • Dmitry Marchenko

    • Helmholtz-Zentrum Berlin für Materialien und Energie

  • Andrei Varykhalov

    • Helmholtz-Zentrum Berlin für Materialien und Energie
    • Helmholtz-Zentrum Berlin fuer Materialien und Energie

  • Christian Ast

    • Max-Planck-Institut für Festkörperforschung
    • Nanoscale Science, Max-Planck-Institute for Solid State Research
    • Max Planck Institute for Solid State Research

  • Roberto Car

    • Department of Chemistry, Princeton University
    • Princeton University
    • Department of Chemistry, Princeton University, Princeton, NJ 08544, USA

  • Jennifer Cano

    • Stony Brook University
    • Stony Brook University, USA
    • Physics and Astronomy, Stony Brook University
    • Flatiron Institute; Stony Brook Univ.
    • Department of Physics, Stonybrook University
    • Department of Physics and Astronomy, Stony Brook University
    • State Univ of NY - Stony Brook

  • Maia Garcia Vergniory

    • Donostia International Physics Center
    • Donostia International Physics Center-DIPC
    • Donostia International Physics Center, Spain
    • Donastia nternational Physics Center, San Sebastian, Spain

  • Nai Phuan Ong

    • Princeton University
    • Department of Physics, Princeton University

  • Leslie M Schoop

    • Princeton University
    • Princeto University, Princeton, USA
    • Department of Chemistry, Princeton University