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Observation of ferromagnetic resonance in SrRuO3 by the time-resolved magneto-optical Kerr effect

Publication Type

Journal Article

Authors

Langner, M.C., C.L.S. Kantner, Y.H. Chu, L.M. Martin, P. Yu, J. Seidel, Ramamoorthy Ramesh, J. Orenstein

DOI

10.1103/PhysRevLett.102.177601

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 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.

Journal

Physical Review Letters

Volume

102

Year of Publication

2009

ISSN

00319007

Notes

cited By 39

Research Areas

Ramesh Lab