Angular Phase Boundaries of the Field Polarized Superconducting Phase of UTe<sub>2</sub>

ORAL

Abstract

Heavy fermion UTe2 is a promising candidate for topological superconductivity. It also exhibits multiple superconducting phases that, uniquely, only exist at high magnetic field. One such phase, often referred to as the Lazarus state, is obtained by applying fields of more than 40 T off of the crystallographic axes. Specifically, it has only been observed when the field is oriented between 20 and 40o from b towards c. Here, we present measurements of the field-angle phase boundaries that motivate a reevaluation of the angular extent of the unusual superconducting state.The observed behavior is inconsistent with known phenomenology for field-enhanced superconductivity.

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Presenters

  • Peter A Czajka

    • NIST

Authors

  • Peter A Czajka

    • NIST

  • Sylvia K Lewin

    • NIST
    • National Institute of Standards and Technology

  • Corey E Frank

    • National Institute of Standards and Tech

  • Gicela G Saucedo Salas

    • University of Texas at El Paso

  • Hyeok Yoon

    • University of Maryland, College Park

  • Yun Suk Eo

    • University of Maryland, College Park

  • Johnpierre Paglione

    • University of Maryland, College Park
    • Maryland Quantum Materials Center, Department of Physics, University of Maryland, College Park, Maryland 20742, USA

  • John Singleton

    • NHMFL/ LANL
    • NHMFL, Los Alamos National Laboratory
    • Los Alamos National Laboratory

  • Nicholas P Butch

    • National Institute of Standards and Tech