Observation of ferromagnetic resonance in SrRuO3 by the time-resolved magneto-optical Kerr effect.
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, alpha approximately 1, are consistent with strong spin-orbit coupling. We find that the parameters associated with the magnetization dynamics, including alpha, have a nonmonotonic temperature dependence, suggestive of a link to the anomalous Hall effect.
Langner
M C
MC
Department of Physics, University of California, Berkeley, California 94720, USA.
Kantner
C L S
CL
Chu
Y H
YH
Martin
L M
LM
Yu
P
P
Seidel
J
J
Ramesh
R
R
Orenstein
J
J