Anomalous c-axis Transport Response of UTe2

ORAL  · Invited

Abstract

We study the temperature dependence of electrical resistivity for currents directed along all crystallographic axes of the spin-triplet superconductor UTe2. We focus particularly on an accurate determination of the resistivity along the c-axis (ρc) by using transport geometries that allow extraction of two resistivities along with the primary axes directions. In contrast to the existence of the highly anisotropic band structure, our measurement of the absolute values of resistivities in all current directions reveals a surprisingly nearly isotropic transport behavior. The temperature dependence of ρc exhibits a peak associated with the temperature much lower than the onset of Kondo coherence observed in ρa and ρb, consistent with features in magnetotransport and magnetization that point to a magnetic origin.  A comparison to the temperature-dependent evolution of scattering observed in angle-resolved photoemission experiments also provides important insights into the underlying electronic structure necessary for building a microscopic model of UTe2.

*Research at the University of Maryland was supported by the Department of Energy Award No. DE-SC-0019154 (transport experiments), the National Science Foundation Division of Materials Research Award DMR-1905891 (support of J.C.), the Gordon and Betty Moore Foundation's EPiQS Initiative through Grant No. GBMF9071 (materials synthesis), NIST, and the Maryland Quantum Materials Center. A. H. N. was supported by the National Science Foundation Division of Materials Research Award DMR-1917511 and by Robert A. Welch Foundation grant C-1818. This research used resources of the Advanced Light Source, a U.S. DOE Office of Science User Facility under Contract No. DE-AC02-05CH11231. Research at New York University was supported by the National Science Foundation under Grant No. DMR-2105081.

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Publication: https://arxiv.org/abs/2101.03102

Presenters

  • Yun Suk Eo

    • University of Maryland, College Park

Authors

  • Yun Suk Eo

    • University of Maryland, College Park

  • Shouzheng Liu

    • New York University

  • Shanta Saha

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

  • Hyunsoo Kim

    • Texas Tech Univ

  • Sheng Ran

    • Washington University, St. Louis

  • Jarryd Horn

    • University of Maryland, College Park

  • Halyna Hodovanets

    • Texas Tech Univ

  • John C Collini

    • University of Maryland, College Park

  • Wesley T Fuhrman

    • University of Maryland, College Park
    • Johns Hopkins University

  • Andriy H Nevidomskyy

    • Rice Univ
    • Rice University
    • Department of Physics and Astronomy, Rice University, Houston, Texas 77005, USA
    • Department of Physics and Astronomy, Rice University, TX, USA
    • Department of Physics and Astronomy, Rice University
    • Department of Physics & Astronomy, Rice University

  • Jonathan D Denlinger

    • Lawrence Berkeley National Laboratory
    • Lawrence Berkeley National Lab

  • Nicholas Butch

    • National Institute of Standards and Tech
    • National Institute of Standards and Technology
    • Center for Neutron Research, National Institute of Standards and Technology

  • Michael S Fuhrer

    • Monash University

  • L. Andrew A Wray

    • New York University (NYU)
    • New York University

  • Johnpierre Paglione

    • University of Maryland, College Park
    • Maryland Quantum Materials Center, University of Maryland, College Park, MD 20742, USA
    • Univ of Maryland-College Park