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Open Access Publications from the University of California

Observation of ferromagnetic resonance in strontium ruthenate (SrRuO3)


We report the observation of ferromagnetic resonance (FMR) in SrRuO3 using the time-resolved magnetooptical Kerr effect. The FMR oscillations in the time-domain appear in response to a sudden, optically induced change in the direction of easy-axis anistropy. The high FMR frequency, 250 GHz, and large Gilbert damping parameter, alpha ~;; 1, are consistent with strong spin-orbit coupling. We find that the parameters associated with the magnetization dynamics, including alpha, have a non-monotonic temperature dependence, suggestive of a link to the anomalous Hall effect.

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