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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