%0 Journal Article
%K time-resolved
%K resonance
%K Ferromagnetism
%K Ferromagnetic materials
%K Spin-orbit couplings
%K Magnetic field effects
%K Ferromagnetic resonance
%K Anomalous hall effects
%K Easy-axis anisotropies
%K Gilbert damping parameters
%K Magnetization dynamics
%K Magneto-optical kerr effects
%K Nonmonotonic temperature dependences
%K Time domains
%K Hall effect
%K Kerr magnetooptical effect
%K Magnetos
%K Optical Kerr effect
%A M.C Langner
%A C.L.S Kantner
%A Y.H Chu
%A L.M Martin
%A P Yu
%A J Seidel
%A Ramamoorthy Ramesh
%A J Orenstein
%B Physical Review Letters
%D 2009
%G eng
%R 10.1103/PhysRevLett.102.177601
%T Observation of ferromagnetic resonance in SrRuO3 by the time-resolved magneto-optical Kerr effect
%V 102
%X We report the observation of ferromagnetic resonance (FMR) in SrRuO3 using the time-resolved magneto-optical Kerr effect. The FMR oscillations in the time-domain appear in response to a sudden, optically induced change in the direction of easy-axis anisotropy. The high FMR frequency, 250 GHz, and large Gilbert damping parameter, α 1, are consistent with strong spin-orbit coupling. We find that the parameters associated with the magnetization dynamics, including α, have a nonmonotonic temperature dependence, suggestive of a link to the anomalous Hall effect. © 2009 The American Physical Society.