Magnetic exchange interaction between rare-earth and Mn ions in multiferroic hexagonal manganites

D. Talbayev; A. D. LaForge; S. A. Trugman; N. Hur; A. J. Taylor; R. D. Averitt; D. N. Basov

doi:10.1103/PhysRevLett.101.247601

Magnetic exchange interaction between rare-earth and Mn ions in multiferroic hexagonal manganites

Materials Science 2009-11-13 v1

Authors: D. Talbayev , A. D. LaForge , S. A. Trugman , N. Hur , A. J. Taylor , R. D. Averitt , D. N. Basov

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Abstract

We report a study of magnetic dynamics in multiferroic hexagonal manganite HoMnO3 by far-infrared spectroscopy. Low-temperature magnetic excitation spectrum of HoMnO3 consists of magnetic-dipole transitions of Ho ions within the crystal-field split J=8 manifold and of the triangular antiferromagnetic resonance of Mn ions. We determine the effective spin Hamiltonian for the Ho ion ground state. The magnetic-field splitting of the Mn antiferromagnetic resonance allows us to measure the magnetic exchange coupling between the rare-earth and Mn ions.

Keywords

magnetic exchange interaction multiferroic hexagonal manganites far-infrared spectroscopy antiferromagnetic resonance spin Hamiltonian

Cite

@article{arxiv.0811.0999,
  title  = {Magnetic exchange interaction between rare-earth and Mn ions in multiferroic hexagonal manganites},
  author = {D. Talbayev and A. D. LaForge and S. A. Trugman and N. Hur and A. J. Taylor and R. D. Averitt and D. N. Basov},
  journal= {arXiv preprint arXiv:0811.0999},
  year   = {2009}
}

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accepted for publication in Physical Review Letters

Magnetic exchange interaction between rare-earth and Mn ions in multiferroic hexagonal manganites

Abstract

Keywords

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