Topology and superconductivity in UTe<sub>2</sub>: a microscopic perspective

 · Invited

Abstract

Recent Kerr effect and specific heat measurements have placed strong constraints on the pairing symmetry in UTe2 [1]. Here we discuss the implications of these measurements on the microscopic descriptions of the superconducting state of UTe2, revealing how topologically protected Weyl nodes naturally arise. We further present a microscopic description of the superconducting state that is motivated by our DFT+U calculations. These calculations reveal an f-electron derived topological band near the chemical potential, which illuminates the structure of spin-orbit interactions and their role on the superconducting state [2].

[1] I. M. Hayes, D. S. Wei, T. Metz, J. Zhang, Y.-S. Eo, S. Ran, S. R. Saha, J. Collini, N. P. Butch, D. F. Agterberg, A. Kapitulnik, and J. Paglione, arXiv:2002.02539 (2020).

[2] T. Shishidou, H. G. Suh, P.M.R. Brydon, M. Weinert, and D. F. Agterberg, arXiv:2008.04250 (2020).

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Presenters

  • Daniel Agterberg

    • University of Wisconsin - Milwaukee
    • Department of Physics, University of Wisconsin, Milwaukee

Authors

  • Daniel Agterberg

    • University of Wisconsin - Milwaukee
    • Department of Physics, University of Wisconsin, Milwaukee

  • Philip Brydon

    • Univ of Otago
    • University of Otago

  • 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

  • John Collini

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

  • Yun Suk Eo

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

  • Ian Hayes

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

  • Aharon Kapitulnik

    • Stanford Univ

  • Tristin Metz

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

  • 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

  • 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

  • Shanta Saha

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

  • Tatsuya Shishidou

    • University of Wisconsin-Milwaukee
    • University of Wisconsin - Milwaukee

  • Han Gyeol Suh

    • University of Wisconsin - Milwaukee

  • Di S Wei

    • Stanford Univ

  • Michael Weinert

    • University of Wisconsin - Milwaukee

  • Jian Zhang

    • Fudan Univ