STM studies of Iron-based Superconductor FeSe<sub>0.5</sub>Te<sub>0.5</sub>

ORAL

Abstract

Recent studies on the iron-based superconductor, FeSe0.5Te0.5 have suggested that it is in a topologically non-trivial phase and harbors topological surface states. When these states are gapped by proximity effect, Majorana bound states are expected in the vortex cores, which have been confirmed by STM. In this work we present STM studies of both the vortex core states as well as boundary states in FeSe0.5Te0.5. Our data provide supporting evidence for the existence of Majorana modes in this system.

*The work was supported by the National Science Foundation and the Department of Energy. The STM component was made possible through the NSF Award DMR-1610143 while the data analysis was funded by the DOE Scanned Probe Division under the Award Number DE-SC0014335.

–

Presenters

  • Jorge Olivares Rodriguez

    • Department of Physics, University of Illinois Urbana Champaign

Authors

  • Zhenyu Wang

    • Department of Physics, University of Illinois Urbana Champaign
    • University of Illinois at Urbana-Champaign

  • Jorge Olivares Rodriguez

    • Department of Physics, University of Illinois Urbana Champaign

  • Genda Gu

    • Brookhaven National Laboratory
    • Brookhaven National Lab
    • Department of Condensed Matter Physics and Materials Science, Brookhaven, Brookhaven National Laboratory, Upton, New York 11973-5000, USA.
    • Cond. Matt. Physics and Material Science, Brookhaven Natl Lab
    • Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory
    • Condensed Matter Physics & Materials Science Department, Brookhaven National Laboratory
    • Brookhaven National Labs, Long Island, NY, USA, 11973
    • Condensed Matter Physics & Materials Science, Brookhaven National Laboratory
    • Condensed Matter Physics, Brookhaven National Laboratory
    • Brookhaven National Laboratories
    • Chinese Academy of Sciences
    • Condensed Matter Physics & Materials Science, Brookhaven National Lab
    • Brookhaven Natl Lab

  • Dirk Morr

    • University of Illinois at Chicago
    • Department of Physics, University of Illinois at Chicago

  • Taylor Hughes

    • University of Illinois at Urbana-Champaign
    • Department of Physics and Institute for Condensed Matter Theory, University of Illinois at Urbana-Champaign
    • University of Illinois Urbana-Champaign
    • Physics, University of Illinois at Urbana-Champaign
    • Physics Institute for Condensed Matter Theory, University of Illinois Urbana-Champaign
    • Department of Physics, University of Illinois Urbana Champaign

  • Vidya Madhavan

    • Physics, University of Illinois at Urbana-Champaign
    • Department of Physics, University of Illinois Urbana Champaign
    • Univ of Illinois - Urbana
    • University of Illinois at Urbana-Champaign
    • Physics, University of Illinois Urbana-Champaign