Probing the Superconducting State of FeTe<sub>0.55</sub>Se<sub>0.55</sub> with Point-Contact Spectroscopy

ORAL

Abstract

The material FeTe1-xSex provides an easy platform to study the Iron-based superconductors due to its simple crystal structure and relatively high superconducting transition temperature. In addition, some recent ARPES and STM studies suggest that FeTe0.55Se0.45 may be topologically non-trivial. With this in mind, we use Point-Contact Differential Conductance studies to further investigate this material. We find a “Cusp-like” Zero Bias Conductance Peak (ZBCP) emerges below Tc. The magnetic field dependence of this ZBCP is investigated as a function of field angle and temperature in order to determine its physical origin.

*NSF DMR-1709987

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Presenters

  • Mason Gray

    • Boston College
    • Physics, Boston College

Authors

  • Mason Gray

    • Boston College
    • Physics, Boston College

  • Ryan O'Connor

    • Boston College

  • Samuel Jenkins

    • Boston College

  • Josef Freudenstein

    • Boston College

  • Ruidan Zhong

    • Brookhaven National Lab
    • Department of Chemistry, Princeton University
    • Department of Condensed Matter Physics and Materials Science, Brookhaven, Brookhaven National Laboratory, Upton, New York 11973-5000, USA.
    • Brookhaven National Laboratory
    • Condensed Matter Physics & Materials Science, Brookhaven National Laboratory
    • Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory
    • Brookhaven National Laboratories

  • 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

  • Kenneth Burch

    • Department of Physics, Boston College
    • Boston College
    • Physics, Boston College