Answers are grounded in this paper and cite their sources.
Damping of coherent optical phonons is investigated by femtosecond time-resolved second-harmonic generation at Gd(0001) and Tb(0001) surfaces. At low temperature the damping rate increases monotonically with temperature, but close to the Curie point the damping rate is strongly reduced. We explain this behavior by phonon-magnon scattering originating from spin-orbit coupling proven by a larger effect for Tb than for Gd. Consideration of phonon-electron and phonon-phonon scattering shows that magnon-mediated damping is dominant almost up to the Curie temperature.
No takes yet. Share an insight, caveat, or question.
Melnikov et al. (2008) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: