Magnetic excitations in multiferroic LuMnO3 studied by inelastic neutron scattering

H. J. Lewtas; A. T. Boothroyd; M. Rotter; D. Prabhakaran; H. Mueller; M. D. Le; B. Roessli; J. Gavilano; P. Bourges

doi:10.1103/PhysRevB.82.184420

Magnetic excitations in multiferroic LuMnO3 studied by inelastic neutron scattering

Strongly Correlated Electrons 2010-12-01 v2

Authors: H. J. Lewtas , A. T. Boothroyd , M. Rotter , D. Prabhakaran , H. Mueller , M. D. Le , B. Roessli , J. Gavilano , P. Bourges

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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.

Keywords

multiferroic LuMnO3 magnetic excitations magnon dispersion inelastic neutron scattering spin-wave model magnetic anisotropy

Cite

@article{arxiv.1007.5490,
  title  = {Magnetic excitations in multiferroic LuMnO3 studied by inelastic neutron scattering},
  author = {H. J. Lewtas and A. T. Boothroyd and M. Rotter and D. Prabhakaran and H. Mueller and M. D. Le and B. Roessli and J. Gavilano and P. Bourges},
  journal= {arXiv preprint arXiv:1007.5490},
  year   = {2010}
}

Comments

7 pages, 8 figures, typo corrected

Magnetic excitations in multiferroic LuMnO3 studied by inelastic neutron scattering

Abstract

Keywords

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