Magnetic dispersion and anisotropy in multiferroic BiFeO3

Details Magnetic dispersion and anisotropy in multiferroic BiFeO3 Magnetic dispersion and anisotropy in multiferroic BiFeO3

2012-03-23

arxiv.org/abs/1203.5294v1

Physics

Condensed Matter

Materials Science

4 pages, 5 figures

Scientific paper

We have determined the full magnetic dispersion relations of multiferroic BiFeO3. 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 strong magneto-electric coupling in this compound.

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