Magnetic excitations in bulk multiferroic two-dimensional triangular lattice antiferromagnet (Lu,Sc)FeO3

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