Title:Oral: Exploring Topology of Fermi Arcs in t-PtBi2 Using High Resolution Angle Resolved Photoemission Spectroscopy

ORAL

Abstract

Trigonal phase PtBi2 is a Type-I Weyl semimetal which was proposed to have topologically protected surface states. Here we study the electronic structure of this material using high resolution angle resolved photoemission spectroscopy and density functional theory calculations. We demonstrate that some of the surface states indeed form Fermi arcs, a disconnected portion of the Fermi surface. We did not find any signatures of a superconducting gap along the Fermi arcs, in contradiction to previous reports.

*This work was supported by the U.S. Department of Energy, Office of Basic Energy Sciences, Division of Materials Science and Engineering, Ames National Laboratory which is operated for the U.S. Department of Energy by Iowa State University under Contract No. DE-AC02-07CH11358.

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Publication: Observation of Fermi Arcs and Superconductivity in t-PtBi2 Using High Resolution Angle Resolved Photoemission Spectroscopy

Presenters

  • Evan O'Leary

    • Iowa State University

Authors

  • Evan O'Leary

    • Iowa State University

  • Yevhen Kushnirenko

    • Ames National Laboratory

  • Zhuoqi Li

    • Ames National Laboratory

  • Lin-Lin Wang

    • Ames National Laboratory and Iowa State University
    • Ames National Laboratory

  • Benjamin Schrunk

    • Ames National Laboratory

  • Andrew Eaton

    • Iowa State University

  • Paul C Canfield

    • Iowa State University
    • Ames National Laboratory, and Department of Physics and Astronomy, Iowa State University
    • Ames National Laboratory and Iowa State University

  • Adam Kaminski

    • Iowa State University