In:
Journal of Applied Physics, AIP Publishing, Vol. 104, No. 9 ( 2008-11-01)
Abstract:
The ultrafast electron dynamics subsequent to a hundred femtoseconds photoexcitation is monitored in a few nanometers thick Au/Co/Au film by means of time-resolved transient spectroscopy. We show that the insertion of thin Co layer in Au film leads to a drastic modification in 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.
Type of Medium:
Online Resource
ISSN:
0021-8979
,
1089-7550
Language:
English
Publisher:
AIP Publishing
Publication Date:
2008
detail.hit.zdb_id:
220641-9
detail.hit.zdb_id:
3112-4
detail.hit.zdb_id:
1476463-5
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