Stable Weyl points and trivial surface states in carrier compensated semimetal WP2

ORAL

Abstract

The possible relation between the extremely large magneto-resistance (XMR) and the presence of Weyl points has recently drawn a lot of attention in the study of topological semimetals. Here we combine angle-resolved photoemission spectroscopy and density functional theory calculations to identify both surface and bulk electronic states in WP2. While the surface is uncompensated, our results show the bulk-band structure of WP2 is particle hole-compensated and it is compatible with the presence of at least 4 Weyl points, confirming its topological nature.

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Presenters

  • Elia Razzoli

    • QMI - UBC
    • Quantum Matter Institute, Univ. of British Columbia
    • Quantum Matter Institute
    • Quantum Matter Institute, Univ of British Columbia

Authors

  • Elia Razzoli

    • QMI - UBC
    • Quantum Matter Institute, Univ. of British Columbia
    • Quantum Matter Institute
    • Quantum Matter Institute, Univ of British Columbia

  • Berend Zwartsenberg

    • QMI - UBC
    • Quantum Matter Institute
    • Quantum Matter Institute, Univ of British Columbia

  • Fabio Boschini

    • QMI - UBC
    • Quantum Matter Institute, Univ. of British Columbia
    • Quantum Matter Institute
    • Quantum Matter Institute, Univ of British Columbia

  • Matteo Michiardi

    • Department of Physics and Astronomy , University of British Columbia
    • QMI - UBC
    • Quantum Matter Institute, Univ. of British Columbia
    • Quantum Matter Institute
    • Quantum Matter Institute, Univ of British Columbia

  • Ryan Day

    • QMI - UBC
    • Quantum Matter Institute, Univ. of British Columbia
    • Quantum Matter Institute
    • Quantum Matter Institute, Univ of British Columbia

  • Christopher Gutierrez

    • Quantum Matter Institute, University of British Columbia
    • Univ British Columbia
    • Quantum Matter Institute
    • Center for Nanoscale Science and Technology, National Institute of Standards and Technology

  • Ilya Elfimov

    • Quantum Matter Institute
    • Quantum Matter Institute, Univ of British Columbia

  • Vicky Suess

    • MPG
    • Max Planck Institute for Chemical Physics of Solids

  • Claudia Felser

    • Max Planck CPfS Dresden
    • MPG
    • Max Planck Institute
    • Max Planck Inst
    • Max Planck Institute for Chemical Physics of Solids

  • Andrea Damascelli

    • QMI - UBC
    • Quantum Matter Institute, Univ. of British Columbia
    • Quantum Matter Institute
    • Quantum Matter Institute, Univ of British Columbia
    • Quantum Matter Institute, University of British Columbia