Electrodynamic response of the unconventional superconductor UTe<sub>2</sub>

ORAL

Abstract

Evidence was recently reported that UTe2 is a nonunitary spin-triplet superconductivity, whch features a high (for this material family) transition temperature of 1.6 K and a remarkably large and anisotropic upper critical field exceeding 40 T. Here we report results of measurements on the electrodynamic response of this compound down to low frequencies and temperatures. We investigate the finite frequency response of this system and search for evidence for the ferromagnetic flucutuations that have been seen in the optical response of other exotic superconductors close to ferromagnetism.

*Work at Johns Hopkins was supported as part of the Institute for Quantum Matter, an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Basic Energy Sciences under Award No. DE-SC0019331. Crystal growth work at UMD was supported by NIST. Wesley T. Fuhrman is grateful for the support of the Schmidt Science Fellows program, in partnership with the Rhodes Trust.

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Presenters

  • Peter Armitage

    • Department of Physics and Astronomy, The Johns Hopkins University, Baltimore, MD 21218
    • Johns Hopkins University
    • Institute of Quantum Matter, Department of Physics and Astronomy, Johns Hopkins University

Authors

  • Sirak Mekonen

    • Johns Hopkins University

  • David Barbalas

    • Johns Hopkins University

  • Dipanjan Chaudhuri

    • Johns Hopkins University

  • Sheng Ran

    • NIST Center for Neutron Research, National Institute of Standards and Technology
    • University of Maryland, College Park
    • National Institute of Standards and Technology
    • Physics Department, University of Maryland
    • University of Maryland
    • University of Maryland, College Park & NIST
    • Department of Physics, University of Maryland, College Park
    • NIST Center for Neutron Research

  • Wesley T Fuhrman

    • Maryland Quantum Materials Center, Department of Physics, University of Maryland College Park
    • University of Maryland, College Park
    • Center for Quantum Materials, University of Maryland

  • Nicholas Butch

    • NIST Center for Neutron Research, National Institute of Standards and Technology
    • National Institute of Standards and Technology
    • Center of Neutron Research, National Institute of Standards and Technology
    • Center for Neutron Research, National Institute of Standards and Technology
    • NIST Center for Neutron Research
    • NIST center for neutron research
    • NIST
    • NIST Center for Neutron Research, National Institute of Standards and Technology,
    • University of Maryland, College Park & NIST
    • National Institute of Standards and Technology Center for Neutron Research

  • Peter Armitage

    • Department of Physics and Astronomy, The Johns Hopkins University, Baltimore, MD 21218
    • Johns Hopkins University
    • Institute of Quantum Matter, Department of Physics and Astronomy, Johns Hopkins University