LERMÉ, J.; CELEP, G.; BROYER, M.; COTTANCIN, E.; PELLARIN, M.; ARBOUET, Arnaud; CHRISTOFILOS, D.; GUILLON, C.; LANGOT, P.; DEL FATTI, N.; VALLÉE, F.

doi:10.1140/epjd/e2005-00107-8

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LERMÉ, J.
Laboratoire de Spectrométrie Ionique et Moléculaire [LASIM]

CELEP, G.
Laboratoire de Spectrométrie Ionique et Moléculaire [LASIM]

BROYER, M.
Laboratoire de Spectrométrie Ionique et Moléculaire [LASIM]

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The European Physical Journal D : Atomic, molecular, optical and plasma physics. 2005-07-13, vol. 34, p. 199

EDP Sciences

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Effects of confinement on the electron-electron (e-e) and electron-phonon (e-ph) thermalization dynamics in noble metal clusters are calculated using simple approaches. The model predictions are compared with femtosecond pump-probe measurements which display an acceleration of the e-e and e-ph relaxation dynamics. The size-effects on the e-e relaxation dynamics are consistent with a model involving the surface-induced reduction of the screening efficiency of the Coulomb e-e interaction. With regard to the e-ph relaxation dynamics, this model yields too large time constants, pointing out deficiencies of the standard modelling of the e-ph energy exchanges in bulk metals. Analysis of these deficiencies shows that the bare e-ion interaction has to be involved in the transition matrix element describing the non-adiabatic e-ph energy exchanges.< Réduire

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Effects of confinement on the electron and lattice dynamics in metal nanoparticles

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