Effects of Pressure on Superconductivity in Chemically Substituted MoB2

ORAL

Abstract

Recently, superconductivity was discovered in MoB2 with a Tc of 3K at a pressure of 25 GPa which goes to 32 K upon increasing pressure to 100 GPa. Here, we report the results of studies to examine the superconducting behavior of chemically substituted variants of MoB2, both at ambient and high pressure.  In particular, we have identified a variant in which superconductivity in the MgB2-like structure occurs at ambient pressure with a Tc of ~8 K.  We will present the results of measurements of the superconducting critical temperature, critical field, and crystal structure under high pressure. 

*The work was supported by the US Department of Energy Basic Energy Sciences under Contract No. DE-SC-0020385. High pressure equipment development at the University of Florida was supported by National Science Foundation CAREER award DMR-1453752.

–

Presenters

  • Shubham Sinha

    • University of Florida

Authors

  • Shubham Sinha

    • University of Florida

  • Jinhyuk Lim

    • Department of Physics, University of Florida
    • University of Florida

  • JungSoo Kim

    • Department of Physics, University of Florida
    • University of Florida

  • Ajinkya C Hire

    • Department of Materials Science and Engineering, University of Florida
    • University of Florida

  • Gregory R Stewart

    • Department of Physics, University of Florida
    • University of Florida

  • Richard G. G Hennig

    • University of Florida
    • Department of Materials Science and Engineering, University of Florida
    • Department of Materials Science and Engineering, University of Florida, Gainesville, Florida 32611, United States

  • Peter J Hirschfeld

    • University of Florida
    • Department of Physics, University of Florida

  • James J Hamlin

    • University of Florida
    • Department of Physics, University of Florida