%0 Journal Article
%T Ultrafast electron thermalization in a magnetic layered Au/Co/Au film
%+ Laboratoire Pierre Aigrain (LPA)
%+ Institut d'électronique fondamentale (IEF)
%A Labourt-Ibarre, Arnaud
%A Voisin, Christophe
%A Cassabois, Guillaume
%A Delalande, Claude
%A Flytzanis, Christos
%A Roussignol, Philippe
%A Beauvillain, Pierre
%< avec comité de lecture
%Z Optique Cohérente et Non Linéaire
%@ 0021-8979
%J Journal of Applied Physics
%I American Institute of Physics
%V 104
%P 094301
%8 2008
%D 2008
%Z Physics [physics]/Condensed Matter [cond-mat]/Other [cond-mat.other]Journal articles
%X The ultrafast electron dynamics subsequent to a hundred femtosecond photo-excitation is monitored in a few nanometer thick Au/Co/Au film by means of time-resolved transient spectroscopy. We show that the insertion of the thin Co layer in the Au film leads to a drastic modification of the scattering rates of the different thermalization regimes. The electron-electron interactions are dominated by the mobile sp-electrons scattering on the heavy d-electrons, which concomitantly enhances the electron-phonon interactions by up to a factor of 5. In the framework of ultrafast magnetization dynamics, this study provides important data on the electronic processes underlying the spin dynamics in a sample typically designed for magneto-optical applications.
%G English
%2 https://hal.science/hal-00345478/document
%2 https://hal.science/hal-00345478/file/Voisin-dyn_au_vHAL.pdf
%L hal-00345478
%U https://hal.science/hal-00345478
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