Magnetism in iridate heterostructures leveraged by structural distortions

ORAL

Abstract

Heterostructuring of complex oxides into superlattices is an emerging method that provides new avenues to stabilize ground states unavailable to bulk synthesis. Artificial analogues to the Ruddlesen-Popper series iridates, composed of metallic SrIrO3 interspaced with band insulating SrTiO3, are shown to conserve the bulk-like spin-flop transition through resonant elastic scattering. However, measurements of the magnetic excitation spectrum with resonant inelastic scattering evidence a strong alteration in the stability of the magnetic ground state, driven by structural distortions not present in the bulk materials. These results point to heterostructuring as a powerful method for modulating the magnetic ground state of complex oxides hosting strong spin-orbit coupling.

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Presenters

  • Derek Meyers

    Brookhaven National Laboratory, Condensed Matter Physics and Materials Science, Brookhaven National Laboratory, Brookhaven Natl Lab

Authors

  • Derek Meyers

    Brookhaven National Laboratory, Condensed Matter Physics and Materials Science, Brookhaven National Laboratory, Brookhaven Natl Lab

  • Yue Cao

    CMPMSD, Brookhaven National lab, Condensed Matter Physics and Material Science Department, Brookhaven National Laboratory, Brookhaven Natl Lab

  • Gilberto Fabbris

    Brookhaven National Laboratory, Brookhaven Natl Lab, Advanced Photon Source, Argonne National Laboratory

  • Neil Robinson

    Brookhaven Natl Lab

  • Lin Hao

    Univ of Tennessee, Knoxville, University of Tennessee

  • Clayton Frederick

    Univ of Tennessee, Knoxville, University of Tennessee

  • Nathan Traynor

    University of Tennessee

  • Junyi Yang

    Univ of Tennessee, Knoxville, University of Tennessee

  • Jiaqi Lin

    Institute of Physics

  • Mary Upton

    Argonne National Lab, Advanced Photon Source, Argonne National Laboratory, Argonne National Laboratory

  • Diego Casa

    Advanced Phonon Source, Argonne National Laboratory, Argonne National Laboratory, Argonne National Lab

  • Jong Woo Kim

    Argonne National Laboratory, The Advanced Photon Source, Argonne National Laboratory, Advanced Photon Source, Argonne National Laboratory, Argonne National Labs

  • Thomas Gog

    Argonne National Laboratory, Argonne National Lab

  • Jenia Karapetrova

    Argonne National Laboratory

  • Yongseong Choi

    Argonne National Laboratory, Argonne Natl Lab, Advanced Photon Source, Argonne National Laboratory, Argonne National Lab, Advanced Photon Sources , Argonne National Laboratory

  • Daniel Haskel

    Advanced Photon Source, Argonne National Laboratory, Argonne National Laboratory, Argonne Natl Lab, Argonne Natl Labs

  • Philip Ryan

    Argonne National Laboratory, Argonne National Labs

  • Lukas Horak

    Charles University

  • Xuerong Liu

    Institute of Physics

  • Jian Liu

    Department of Physics and Astronomy, The University of Tennessee, Univ of Tennessee, Knoxville, University of Tennessee, University of Tennessee-Knoxville

  • Mark Dean

    Brookhaven National Laboratory, Condensed Matter Physics and Materials Science, Brookhaven National Laboratory, Brookhaven Natl Lab, Department of Condensed Matter and Materials Science, Brookhaven National Laboratory