Further evidence of concurrent mass enhancement and superconductivity in a topological state

ORAL

Abstract

Previously1,2, we reported on the concurrent onset of mass enhancement at the Dirac point below the superconducting transition in FeSexTe1-x. In this talk, we will review these results and provide more evidence of this phenomenon using low energy laser-based ARPES measurements. Given the increased interest in this system, due in part to the co-existence of superconductivity and non-trivial topology, our results show that this system is even more complicated than perhaps previously presumed and may require re-interpretation of recent experimental reports.

12019 APS March Meeting (talk: K05.00009)
2arXiv:1907.11602 [cond-mat.supr-con]

*The work carried out at Brookhaven was supported in part by the U.S. DOE under Contract No. DE- SC0012704 and in part by the Center of Computational Design of Functional Strongly Correlated Materials and Theoretical Spectroscopy.

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Presenters

  • Nader Zaki

    • Brookhaven National Laboratory

Authors

  • Nader Zaki

    • Brookhaven National Laboratory

  • Genda Gu

    • Brookhaven National Laboratory
    • Condensed Matter Physics and Materials Science Division, Brookhaven National Laboratory
    • Brookhaven national lab
    • Condensed Matter Physics and Materials Science, Brookhaven National Laboratory
    • Brookhaven National Lab
    • Condensed Matter Physics and Material Science, Brookhaven National Laboratory, Upton, NY, United States
    • Brookhaven National Laboratories
    • Condensed Matter Physics and Material Science Division, Brookhaven National Laboratory

  • Peter Johnson

    • Brookhaven National Laboratory