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arXiv · 0812.0832

Observation of ferromagnetic resonance in strontium ruthenate (SrRuO3)

M. C. Langner·C. L. S. Kantner·Y. H. Chu·L. W. Martin·P. Yu·R. Ramesh·J. Orenstein
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Abstract

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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M. C. Langner, C. L. S. Kantner, Y. H. Chu, L. W. Martin, P. Yu, R. Ramesh, J. Orenstein. 2008-12-03. Observation of ferromagnetic resonance in strontium ruthenate (SrRuO3). https://arxiv.org/abs/0812.0832

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