Sinusoidal electromagnon in RMnO3: Indication of anomalous magnetoelectric coupling
Journal article, 2012

The optical spectra in the family of multiferroic manganites RMnO3 is a great puzzle. Current models cannot explain the fact that two strong electromagnons are present in the noncollinear spin cycloidal phase, with only one electromagnon surviving the transition into the collinear spin sinusoidal phase. We show that this is a signature of the presence of anomalous magnetoelectric coupling that breaks rotational invariance in spin space and generates oscillatory polarization in the ground state.

manganites

multiferroics

Author

Markku Stenberg

Chalmers, Microtechnology and Nanoscience (MC2), Applied Quantum Physics

R. de Sousa

University of Victoria

Physical Review B - Condensed Matter and Materials Physics

1098-0121 (ISSN)

Vol. 85 10 Article Number: 104412 - 104412

Subject Categories

Physical Sciences

DOI

10.1103/PhysRevB.85.104412

More information

Created

10/7/2017