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Self Organized Growth and Ultrafast Electron Dynamics in Metallic Nanoparticles

Published online by Cambridge University Press:  10 February 2011

A. Stella
Affiliation:
Istituto Nazionale per la Fisica della Materia, Dipartimento di Fisica “A. Volta”, Università di Pavia, Via Bassi 6, 27100 Pavia, Italy
P. Cheyssac
Affiliation:
Laboratoire de Physique de la Matière Condensée, URA 190, Université de Nice Sophia Antipolis, Nice Cedex, France
S. De Silvestri
Affiliation:
Centro di Elettronica Quantistica e Strumentazione Elettronica-CNR, Dipartimento di Fisica, Politecnico, Milano, Italy.
R. Kofman
Affiliation:
Laboratoire de Physique de la Matière Condensée, URA 190, Université de Nice Sophia Antipolis, Nice Cedex, France
G. Lanzani
Affiliation:
Centro di Elettronica Quantistica e Strumentazione Elettronica-CNR, Dipartimento di Fisica, Politecnico, Milano, Italy.
M. Nisoli
Affiliation:
Centro di Elettronica Quantistica e Strumentazione Elettronica-CNR, Dipartimento di Fisica, Politecnico, Milano, Italy.
P. Tognini
Affiliation:
Istituto Nazionale per la Fisica della Materia, Dipartimento di Fisica “A. Volta”, Università di Pavia, Via Bassi 6, 27100 Pavia, Italy
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Abstract

We present ultrafast transient reflectivity measurements performed on metallic tin nanoparticles with an average radius between 20 and 60 Å in amorphous matrix. The samples, grown using an evaporation-condensation technique, were characterized by a relatively low nanocrystals size dispersion and a negligible clusters-matrix interaction. The excitation decays exhibited a size-dependent behaviour, which is interpreted in terms of the important role played by the electron-surface interactions.

Type
Research Article
Copyright
Copyright © Materials Research Society 1997

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References

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