1. Spin-lattice coupling, frustration and magnetic order in multiferroic RMnO3
- Author
-
Fabreges, X., Petit, S., Mirebeau, I., Pailhes, S., Pinsard, L., Forget, A., Fernandez-Diaz, M. T., and Porcher, F.
- Subjects
Condensed Matter - Strongly Correlated Electrons ,Condensed Matter - Other Condensed Matter - Abstract
We have performed high resolution neutron diffraction and inelastic neutron scattering experiments in the frustrated multiferroic hexagonal compounds RMnO3 (R=Ho, Yb, Sc, Y), which provide evidence of a strong magneto-elastic coupling in the the whole family. We can correlate the atomic positions, the type of magnetic structure and the nature of the spin waves whatever the R ion and temperature. The key parameter is the position of the Mn ions in the unit cell with respect to a critical threshold of 1/3, which determines the sign of the coupling between Mn triangular planes., Comment: 4 pages, 3 figures, 1 table
- Published
- 2009