Magnetic Confinement of Spin-Triplet Superconductivity

ORAL

Abstract

Electrical magnetoresistance and tunnel diode oscillator measurements were performed under external magnetic fields up to 41T applied along the crystallographic b axis (hard axis) of UTe2 as a function of temperature and applied pressures up to 18.8kbar. In this work, we track the field-induced first-order transition between superconducting and magnetic field-polarized phases as a function of applied pressure, showing suppression of the transition with increasing pressure until the demise of superconductivity near 16kbar and the appearance of a pressure-induced ferromagnetic-like ground state that is distinct from the field-polarized phase and stable at zero field. Together with evidence for the evolution of a second superconducting phase and its upper critical field with pressure, we examine the confinement of superconductivity by two orthogonal magnetic phases and the implications for understanding the boundaries of triplet superconductivity.

*This work was performed at the National High Magnetic Field Laboratory, which is supported by the NSF grant no. DMR-1644779 and the State of Florida. Research at UMD was supported by AFOSR grant no. FA9550-14-1-0332, NSF grant no. DMR-1905891, the GBMF’s EPiQS Initiative grant no. GBMF9071, NIST, and the Maryland Quantum Materials Center.

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Presenters

  • Wen-Chen Lin

    • University of Maryland, College Park

Authors

  • Wen-Chen Lin

    • University of Maryland, College Park

  • Daniel J Campbell

    • Quantum Materials Center, University of Maryland, College Park
    • University of Maryland, College Park

  • Sheng Ran

    • National Institute of Standards and Technology
    • NIST Center for Neutron Research, National Institute of Standards and Technology, University of Maryland, College Park
    • Quantum Materials Center, Department of Physics, University of Maryland College Park
    • Physics, Washington University in St. Louis
    • Maryland Quantum Materials Center and Department of Physics, University of Maryland, College Park
    • Department of Physics and Astronomy, University of Maryland, College Park
    • Washington University
    • Physics Department, Washington University in St. Louis
    • NIST Center for Neutron Research, National Institute of Standards and Technology
    • Washington University in St. Louis
    • Department of Physics, University of California, San Diego
    • University of Maryland, College Park

  • I-Lin Liu

    • National Institute of Standards and Technology
    • Quantum Materials Center, Department of Physics, University of Maryland College Park
    • University of Maryland, College Park
    • Quantum Materials Center, University of Maryland, College Park

  • Hyunsoo Kim

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

  • Andriy Nevidomskyy

    • Department of Physics and Astronomy, Rice University
    • Rice Univ
    • Department of Physics and Astronomy, Rice University, TX, USA
    • Rice Center for Quantum Materials, Rice University
    • Rice University
    • Department of Physics and Astronomy and Rice Center for Quantum Materials, Rice Univ
    • Physics and Astronomy, Rice University

  • David E Graf

    • National High Magnetic Field Laboratory
    • Florida State University
    • National High Magnetic Field Lab, Florida State University
    • National High Magnetic Field Laboratory, Tallahassee and Florida State University
    • National High Magnetic Field Laboratory, Florida State University
    • National High Magnetic Field Laboratory (FSU)
    • Department of Physics, Florida State University
    • National High Magnetic Field Laboratory and Department of Physics, Florida State University
    • National High Magnetic Field Lab
    • National High Magnetic Field Laboratory, Tallahassee, FL
    • CMS, National High Magnetic Laboratory

  • Nicholas Butch

    • National Institute of Standards and Technology
    • NIST Center for Neutron Research, National Institute of Standards and Technology
    • Center for Neutron Research, National Institute of Standards and Technology
    • NCNR, National Institute for Standard and Technology
    • NIST/University of Maryland
    • Center of Neutron Research, National Institute of Standards and Technology, NIST
    • Center for Neutron Research, National Institute of Standards and Technology, National Institute of Standards and Technology
    • NIST Center for Neutro Research, National Institute of Standards and Technology
    • University of Maryland

  • Johnpierre Paglione

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