magnetic dispersion and anisotropy in multiferroic BiFeO3.
نویسندگان
چکیده
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 sizable magnetoelectric coupling in this compound.
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ورودعنوان ژورنال:
- Physical review letters
دوره 109 6 شماره
صفحات -
تاریخ انتشار 2012