Observation of Magnetic Excitations in Na$_3$RuO$_4$ using Inelastic Neutron Scattering

ORAL

Abstract

We report results on magnetic excitations observed in polycrystalline sodium ruthenate (Na$_3$RuO$_4$) in an inelastic neutron scattering study. Previous work has suggested that this material consists of relatively isolated tetramers of S=3/2 Ru(V) ions, and a Heisenberg antiferromagnet Hamiltonian was proposed. We compare predictions for the neutron inelastic structure factor in this model with our observations, and suggest future studies that might clarify apparent discrepancies between this model and our results.

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Authors

  • J.T. Haraldsen

    • University of Tennessee

  • M.B. Stone

    • Oak Ridge National Laboratory

  • M.D. Lumsden

    • Oak Ridge National Laboratory

  • T. Barnes

    • Unversity of Tennessee and Oak Ridge National Laboratory

  • R. Jin

    • Oak Ridge National Laboratory

  • S.E. Nagler

    • Oak Ridge National Laboratory

  • J.W. Taylor

    • ISIS Facility, Rutherford Appleton Laboratory

  • F. Fernandez-Alonso

    • ISIS Facility, Rutherford Appleton Laboratory