Electromagnon and phonon excitations in multiferroic TbMnO3

• Published in: arXiv.org
• Main Authors: Rovillain, P, Liu, J, Cazayous, M, Gallais, Y, M -A Measson, Sakata, H, Sacuto, A
• Format: Paper Journal Article
• Language: English
• Published: Ithaca Cornell University Library, arXiv.org 24.07.2012
• Subjects: Crystallography; Excitation; Ferroelectric materials; Ferroelectricity; Phonons; Physics - Strongly Correlated Electrons; Polarization; Single crystals

We have performed Raman measurements on TbMnO3 single crystal under magnetic field along the three crystallographic directions. The flip of the spin spiral plane creates an electromagnon excitation. In addition to the electromagnons induced by the Heisenberg coupling, we have detected the electromag...