<sup>17</sup>O NMR studies of Sr<sub>2</sub>RuO<sub>4</sub> under uniaxial strain

ORAL

Abstract

Sr2RuO4 is a candidate for chiral odd-parity superconductivity with Tc~1.5 K, an interpretation supported by an unchanged 17O and 101Ru hyperfine shifts upon cooling through Tc. Recently, compressive strain was associated with a sharp peak in Tc, Tcmax~3.5 K, and connected to a Van-Hove Singularity (VHS). Normal state 17O NMR spectra, recorded at low temperature and in samples subject to compressive strain, exhibit corresponding singularities in hyperfine shifts. The results deviate significantly relative to expectations for the VHS, in that impacted susceptibilities are inferred to originate not just with dxy orbitals, but also dyz, dxz. 17O NMR measurements in the superconducting state of strained samples are underway.

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Presenters

  • Yongkang Luo

    • Department of Physics and Astronomy, UCLA
    • Physics and Astronomy, Univ of California - Los Angeles
    • Los Alamos Natl Lab
    • Los Alamos National Laboratory

Authors

  • Yongkang Luo

    • Department of Physics and Astronomy, UCLA
    • Physics and Astronomy, Univ of California - Los Angeles
    • Los Alamos Natl Lab
    • Los Alamos National Laboratory

  • P Guzman

    • Department of Physics and Astronomy, UCLA

  • Hsin-Hua Wang

    • Department of Physics and Astronomy, UCLA
    • Physics and Astronomy, Univ of California - Los Angeles
    • Department of Physics & Astronomy, Univ of California - Los Angeles

  • Yue-Shun Su

    • Department of Physics and Astronomy, UCLA
    • Physics and Astronomy, University of California, Los Angeles

  • Adam Dioguardi

    • Los Alamos National Laboratory
    • Los Alamos Natl Lab

  • Filip Ronning

    • MPA-CMMS, Los Alamos National Laboratory
    • Los Alamos Natl Lab
    • Los Alamos National Laboratory
    • Condensed Matter and Magnetic Science Group, Los Alamos National Laboratory
    • Condensed Matter and Magnet Science Group, Los Alamos National Laboratory

  • Naoki Kikugawa

    • National Institute for Material Science
    • Max Planck Institute for Chemical Physics of Solids

  • Dmitry Sokolov

    • Max Planck Institute for Chemical Physics of Solids

  • Andrew Mackenzie

    • Max Planck Institute Chemical Physics of Solids
    • Max Planck Institute for Chemical Physics of Solids
    • Max Planck Inst
    • Max Plank Institute for Chemical Physics of Solids

  • Eric Bauer

    • MPA-CMMS, Los Alamos National Laboratory
    • Los Alamos National Laboratory
    • Los Alamos Natl Lab
    • Condensed Matter and Magnetic Science Group, Los Alamos National Laboratory
    • Los Alamos National Lab
    • Condensed Matter and Magnet Science Group, Los Alamos National Laboratory

  • Clifford Hicks

    • Max Planck Institute for Chemical Physics of Solids

  • Stuart Brown

    • Department of Physics and Astronomy, UCLA
    • Physics and Astronomy, Univ of California - Los Angeles
    • Physics and Astronomy, University of California, Los Angeles
    • Department of Physics & Astronomy, Univ of California - Los Angeles
    • Physics and Astronomy, UCLA