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Determination of the spin-flip time in ferromagnetic SrRuO3 from time-resolved Kerr measurements by Kantner, C. L. S.; Langner, M. C.; Siemons, W.; Blok, J. L.; Koster, G.; Rijnders, A. J. H. M.; Ramesh, R.; Orenstein, J. is a scholarly article available to read on EtoBox.

What is Determination of the spin-flip time in ferromagnetic SrRuO3 from time-resolved Kerr measurements about?

We report time-resolved Kerr effect measurements of magnetization dynamics in ferromagnetic SrRuO3. We observe that the demagnetization time slows substantially at temperatures within 15K of the Curie temperature, which is ~ 150K. We analyze the data with a phenomenological model that relates the demagnetization time to the spin flip time. In agreement with our observations the model yields a demagnetization time that is inversely proportional to T-Tc. We also make a direct comparison of the spin flip rate and the Gilbert damping coefficient showing that their ratio very close to kBTc, indicating a common origin for these phenomena.

Author

Kantner, C. L. S.; Langner, M. C.; Siemons, W.; Blok, J. L.; Koster, G.; Rijnders, A. J. H. M.; Ramesh, R.; Orenstein, J.

Published

2010

Language

EN