Observation of ferromagnetic resonance in strontium ruthenate (SrRuO3)

Details Observation of ferromagnetic resonance in strontium ruthenate (SrRuO3) Observation of ferromagnetic resonance in strontium ruthenate (SrRuO3)

2008-12-03

arxiv.org/abs/0812.0832v1

Physics

Condensed Matter

Materials Science

submitted to Phys. Rev. Lett

Scientific paper

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 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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