Ultrafast electron interactions in metal clusters
- 30 April 2002
- journal article
- Published by Cellule MathDoc/Centre Mersenne in Comptes Rendus Physique
- Vol. 3 (3) , 365-380
- https://doi.org/10.1016/s1631-0705(02)01317-8
Abstract
The recent extension of time-resolved femtosecond optical techniques to the investigation of the ultrafast electron scattering processes in metal clusters offers the unique possibility to follow their evolution from a bulk to a confined metal. The size dependent results obtained in model materials, the noble metals, are presented, focusing on the impact of the confinement on energy redistribution processes (electron–electron and electron–phonon coupling). Their application to the investigation of the acoustic vibration property of cluster and to the cluster-surrounding matrix energy transfers are also discussed. To cite this article: N. Del Fatti, F. Vallée, C. R. Physique 3 (2002) 365–380. L'extension récente des techniques femtosecondes résolues en temps à l'étude des mécanismes d'interaction électronique dans les agrégats métalliques permet de suivre leur évolution d'un métal massif à un métal confiné. Les resultats obtenus en fonction de la taille dans des matériaux modèles, les métaux nobles, sont présentés, en nous focalisant sur l'impact du confinement sur les processus de redistribution de l'énergie (couplages électrons–électrons et électrons–phonons). Leurs applications à l'étude des propriétés des vibrations acoustiques des agrégats et du transfert d'énergie agrégat-matrice sont également discutées. Pour citer cet article : N. Del Fatti, F. Vallée, C. R. Physique 3 (2002) 365–380.Keywords
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