First Angle-Resolved Photoemission Studies of LaNiGa<sub>2</sub>

ORAL

Abstract

LaNiGa2 has been observed to be a time reversal symmetry breaking superconductor below 2 Kelvin, large single crystal growths are now available which allow angle-resolved photoemission spectroscopy (ARPES) to probe the electronic structure. We will show the first ARPES studies on LaNiGa2, showing 3D band dispersion and fermiology consistent with first principles calculations. ARPES data provides evidence for band degeneracies at the Fermi surface, a predicted mechanism for the observed spin-triplet superconductivity.

*MS and IV are supported by AFOSR Grant No. FA9550-18-1-0156.

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Presenters

  • Matthew Staab

    • University of California, Davis

Authors

  • Matthew Staab

    • University of California, Davis

  • Jackson Badger

    • University of California, Davis

  • Yundi Quan

    • Physics Department, University of Florida
    • Department of Physics, University of Florida
    • University of California, Davis

  • Antonio Rossi

    • Lawrence Berkeley National Laboratory
    • University of California, Davis
    • Lawrence Berkeley National Lab, Advanced Light Source
    • Advanced Light Source, Lawrence Berkeley National Laboratory

  • Kasey Devlin

    • University of California, Davis

  • Kelly Neubauer

    • University of California, Davis

  • Chris Perez

    • University of California, Davis

  • Jim Fettinger

    • University of California, Davis

  • Peter Klavins

    • University of California, Davis

  • Susan Kauzlarich

    • University of California, Davis

  • Dai Aoki

    • IMR, Tohoku University
    • IMR, Tohoku Univ.
    • Institute for Materials Research, Tohuko University
    • Tohoku University
    • Tohoku Univ

  • Warren Pickett

    • Department of Physics, University of California Davis
    • University of California, Davis

  • Valentin Taufour

    • University of California, Davis

  • Inna Vishik

    • University of California, Davis
    • Physics and Astronomy, University of California, Davis