Electronic band structure of triplet superconductor UTe<sub>2</sub> from angle resolved photoemission spectroscopy

 · Invited

Abstract

The compound UTe2 has recently been shown to realize spin triplet superconductivity from a non-magnetic normal state. This has sparked intense research activity, including theoretical analyses that suggest the superconducting order parameter to be topologically nontrivial. However, the underlying electronic band structure is a critical factor for these analyses, and remains poorly understood. I will present high resolution angle resolved photoemission (ARPES) measurements covering multiple planes in the 3D Brillouin zone of UTe2, revealing distinct Fermi pockets from two light electron bands and one heavy band. Electronic symmetries and many-body ordering instabilities will be discussed in comparison with numerical simulations.

*This research used resources of the Advanced Light Source, which is a DOE Office of Science User Facility under contract no. DE-AC02-05CH11231. Work at NYU was supported by the MRSEC Program of the National Science Foundation under Award Number DMR-1420073. Synthesis and analysis instrumentation at NYU is supported by NSF under MRI-1531664, and by the Gordon and Betty Moore Foundation’s EPiQS Initiative through Grant GBMF4838. This work was supported by the Gordon and Betty Moore Foundation’s EPiQS Initiative through Grant GBMF4419 (synthesis), and the Maryland Center for Nanophysics and Advanced Materials.

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Presenters

  • L. Andrew Wray

    • New York Univ NYU

Authors

  • L. Andrew Wray

    • New York Univ NYU

  • Lin Miao

    • New York Univ NYU
    • Southeast University

  • Shouzheng Liu

    • New York Univ NYU

  • Yishuai Xu

    • New York Univ NYU

  • Erica Kotta

    • New York Univ NYU

  • Sheng Ran

    • NIST Center for Neutron Research, National Institute of Standards and Technology
    • University of Maryland, College Park
    • National Institute of Standards and Technology
    • Physics Department, University of Maryland
    • University of Maryland
    • University of Maryland, College Park & NIST
    • Department of Physics, University of Maryland, College Park
    • NIST Center for Neutron Research

  • Johnpierre Paglione

    • University of Maryland, College Park
    • Physics Department, University of Maryland
    • Maryland Quantum Materials Center, Department of Physics, University of Maryland College Park
    • Department of Physics, University of Maryland, College Park
    • University of Maryland, College Park & NIST
    • Univ of Maryland-Colege Park
    • Center for Quantum Materials, University of Maryland
    • Maryland Quantum Materials Center, Department of Physics, University of Maryland-College Park,College Park, Maryland 20742

  • Jonathan Denlinger

    • Lawrence Berkeley National Laboratory
    • Advanced Light Source, Lawrence Berkeley National Laboratory
    • Advanced Light Source, Lawrence Berkeley National Lab
    • Advanced Light Source
    • Advanced Light Source, E. O. Lawrence Berkeley National Laboratory

  • Nicholas Butch

    • NIST Center for Neutron Research, National Institute of Standards and Technology
    • National Institute of Standards and Technology
    • Center of Neutron Research, National Institute of Standards and Technology
    • Center for Neutron Research, National Institute of Standards and Technology
    • NIST Center for Neutron Research
    • NIST center for neutron research
    • NIST
    • NIST Center for Neutron Research, National Institute of Standards and Technology,
    • University of Maryland, College Park & NIST
    • National Institute of Standards and Technology Center for Neutron Research