Ultrafast non-local spin dynamics in metallic bi-layers by linear and non-linear magneto-optics
A. Melnikov, A. Alekhin, D. Bürstel, D. Diesing, T.O. Wehling, I. Rungger, M. Stamenova, S. Sanvito, and U. Bovensiepen
in: Ultrafast Magnetism I -Proceedings of Ultrafast Magnetism Conference (UMC2013),
Strasbourg, France, October 28 – November 1, 2013;
Springer Proceedings in Physics, 159, 34-36 (2015), pp. 3;
We make a step towards the understanding of spin dynamics induced by spin-polarized hot carriers in metals. Exciting the Fe layer of Au/Fe/MgO(001) structures with femtosecond laser pulses, we demonstrate the ultrafast spin transport from Fe into Au using time-resolved MOKE and mSHG for depth-sensitive detection of the transient magnetization.
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