Magnetic dispersion and anisotropy in multiferroic BiFeO 3

M. Matsuda; R. S. Fishman; T. Hong; C. H. Lee; T. Ushiyama; Y. Yanagisawa; Y. Tomioka; T. Ito

doi:10.1103/PhysRevLett.109.067205

Magnetic dispersion and anisotropy in multiferroic BiFeO ₃

M. Matsuda, R. S. Fishman, T. Hong, C. H. Lee, T. Ushiyama, Y. Yanagisawa, Y. Tomioka, T. Ito

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Abstract

We have determined the full magnetic dispersion relations of multiferroic BiFeO ₃. In particular, two excitation gaps originating from magnetic anisotropies have been clearly observed. The direct observation of the gaps enables us to accurately determine the Dzyaloshinskii-Moriya (DM) interaction and the single ion anisotropy. The DM interaction supports a sizable magnetoelectric coupling in this compound.

Original language	English
Article number	067205
Journal	Physical Review Letters
Volume	109
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevLett.109.067205
State	Published - Aug 8 2012

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10.1103/PhysRevLett.109.067205

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abstract = "We have determined the full magnetic dispersion relations of multiferroic BiFeO 3. In particular, two excitation gaps originating from magnetic anisotropies have been clearly observed. The direct observation of the gaps enables us to accurately determine the Dzyaloshinskii-Moriya (DM) interaction and the single ion anisotropy. The DM interaction supports a sizable magnetoelectric coupling in this compound.",

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AU - Matsuda, M.

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AU - Hong, T.

AU - Lee, C. H.

AU - Ushiyama, T.

AU - Yanagisawa, Y.

AU - Tomioka, Y.

AU - Ito, T.

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AB - We have determined the full magnetic dispersion relations of multiferroic BiFeO 3. In particular, two excitation gaps originating from magnetic anisotropies have been clearly observed. The direct observation of the gaps enables us to accurately determine the Dzyaloshinskii-Moriya (DM) interaction and the single ion anisotropy. The DM interaction supports a sizable magnetoelectric coupling in this compound.

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Magnetic dispersion and anisotropy in multiferroic BiFeO ₃

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