August 2012

Journal

Magnetic dispersion and anisotropy in multiferroic BiFeO3

By:
Matsuda, Masaaki ; Fishman, Randy S; Hong, Tao ; Lee, C.; Ushiyama, T.; Yanagisawa, Y.; Tomioka, Y.; Ito, T.
Journal Name:
Physical Review Letters
Page Number:
067205
Volume:
109
Issue Number:
6
Publication Date:
August 2012
View DOI Listing:
https://doi.org/10.1103/PhysRevLett.109.067205

Abstract

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 magneto-electric coupling in this compound.


Related Researchers