Magnetic excitations in bulk multiferroic two-dimensional triangular lattice antiferromagnet (Lu,Sc)FeO<sub>3</sub>

ORAL

Abstract

Non-collinear two-dimensional triangular antiferromagnets (2D TLAF) are currently an area of much active research due to their unique magnetic properties, which lead to non-trivial quantum effects that experimentally manifest themselves in the spin excitation spectra. Recent examples of such insulating 2D TLAF include (Y,Lu)MnO3 and CuCrO2. LuFeO3 is a recently discovered multiferroic material, which is isostructural to LuMnO3 and contains one more electron in the eg manifold. Characterization of the AFM ground state (TN = 155 K) in LuFeO3 thin films with magnetometry and neutron diffraction has been previously reported. We present the first report of the spin dynamics in a bulk single crystal of (Lu0.6Sc0.4)FeO3 measured via time-of-flight inelastic neutron scattering, and compare and contrast these results with those found in LuMnO3.

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Presenters

  • Jonathan Leiner

    • Physics, Seoul Natl Univ

Authors

  • Jonathan Leiner

    • Physics, Seoul Natl Univ

  • Taehun Kim

    • Physics, Seoul Natl Univ
    • Department of Physics & Astronomy, Seoul National University

  • Kisoo Park

    • Seoul Natl Univ
    • Department of Physics & Astronomy, Seoul National University
    • Physics, Seoul Natl Univ

  • Joosung Oh

    • Physics, Seoul Natl Univ

  • Toby Perring

    • Rutherford Appleton Laboratory

  • Helen Walker

    • ISIS Neutron and muon source
    • ISIS Facility, Rutherford Appleton Laboratory
    • Rutherford Appleton Laboratory

  • Xianghan Xu

    • Physics, Rutgers University

  • Sang-Wook Cheong

    • Rutgers University
    • Department of Physics and Astronomy, Rutgers University
    • Department of Physics and Astronomy, Rutgers, The State University of New Jersey
    • Physics, Rutgers University
    • Physics and Astronomy, Rutgers University
    • Rutgers Center for Emergent Materials and Department of Physics and Astronomy, Rutgers University
    • Physics and Astronomy, Rutgers Univ.
    • Rutgers Univ
    • Physics, Rutgers Univesity
    • Department of Physics, Rutgers University
    • Physics and Astronomy, Rutgers Center for Emergent Materials
    • Department of Physics & Astronomy , Rutgers University

  • Je-Guen Park

    • Center for Correlated Electron Systems, Institute for Basic Science , Department of Physics and Astronomy, Seoul National University
    • Seoul Natl Univ
    • Department of Physics & Astronomy, Seoul National University
    • Physics, Seoul Natl Univ
    • Department of Physics and Astronomy, Seoul Natl Univ
    • Seoul National University