Magnetic excitations in multiferroic LuMnO3 studied by inelastic neutron scattering

Abstract

We present data on the magnetic and magneto-elastic coupling in the hexagonal multiferroic manganite LuMnO3 from inelastic neutron scattering, magnetization and thermal expansion measurements. We measured the magnon dispersion along the main symmetry directions and used this data to determine the principal exchange parameters from a spin-wave model. An analysis of the magnetic anisotropy in terms of the crystal field acting on the Mn is presented. We compare the results for LuMnO3 with data on other hexagonal RMnO3 compounds.

7 pages, 8 figures, typo corrected

References in corpus (7)

• Ferroelectricity in spiral magnets
• Magnetic Order and Spin Dynamics in Ferroelectric HoMnO${}_3$
• Exchange interaction effects on the optical properties of LuMnO3
• Unconventional spin fluctuations in the hexagonal antiferromagnet YMnO${}_3$
• Multiferroicity induced by dislocated spin-density waves
• Influence of antiferromagnetic ordering on ferroelectric ordering in LuMnO3
• Spin fluctuations in the stacked-triangular antiferromagnet YMnO3

Cited by in corpus (16)

• Dynamical structure factor of triangular-lattice antiferromagnet
• Analogies of structural instabilities in EuTiO3 and SrTiO3
• Spontaneous decays of magneto-elastic excitations in noncollinear antiferromagnet (Y,Lu)MnO3
• Magnetic Structure of Hexagonal Mn-doped LuFeO${}_3$
• Magnon breakdown in a two dimensional triangular lattice Heisenberg antiferromagnet of multiferroic LuMnO${}_3$
• Hexagonal RMnO${}_3$: a model system for 2D triangular lattice antiferromagnets
• Magnon topology and thermal Hall effect in trimerized triangular lattice antiferromagnet
• Order by quenched disorder in the model triangular antiferromagnet RbFe(MoO4)2
• Hybridization and Decay of Magnetic Excitations in two-dimensional Triangular Lattice Antiferromagnets
• Doping influence of spin dynamics and magnetoelectric effect in hexagonal Y${}_{0.7}$Lu${}_{0.3}$MnO${}_3$
• Collective impurity effects in the Heisenberg triangular antiferromagnet
• Raman study of magnetic excitations and magneto-elastic coupling in alpha-SrCr2O4
• Spin wave and spin flip in hexagonal LuMnO3 single crystal
• Theoretical analysis of neutron scattering results for quasi-two dimensional ferromagnets
• Phonons and Hybrid Modes in the High and Low Temperature Far Infrared Dynamics of Hexagonal TmMnO3
• Semi-phenomenological analysis of neutron scattering results for quasi-two dimensional quantum anti-ferromagnet