Coherent spin dynamics in magnetic cobalt nanoparticles

Abstract

We show that the magnetization dynamics of mono-domain cobalt nanoparticles, induced by femtosecond optical pulses, displays a precession motion. The onset of this precession is driven by the magneto-crystalline anisotropy of the nanoparticles. Femtosecond optical spectroscopy has proven to be an efficient method to investigate the time dependent… (More)

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