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Acoustic vibration modes and electron–lattice coupling in self-assembled silver nanocolumns

AuthorsBurgin, J.; Langot, P.; Arbouet, A.; Margueritat, J. ; Gonzalo de los Reyes, José; Afonso, Carmen N. ; Vallée, F.; Mlayah, A.; Rossell, M. D.; Van Tendeloo, G.
Issue Date1-Apr-2008
PublisherAmerican Chemical Society
CitationNano Letters, 8 (5), 1296-1302 (2008)
AbstractUsing ultrafast spectroscopy, we investigated electron–lattice coupling and acoustic vibrations in self-assembled silver nanocolumns embedded in an amorphous Al2O3 matrix. The measured electron–lattice energy exchange time is smaller in the nanocolumns than in bulk silver, with a value very close to that of isolated nanospheres with comparable surface to volume ratio. Two vibration modes were detected and ascribed to the breathing and extensional mode of the nanocolumns, in agreement with numerical simulations.
Description7 pags. ; 5 figs. ; 1 tab.
Publisher version (URL)http://dx.doi.org/10.1021/nl073123r
Appears in Collections:(CFMAC-IO) Artículos
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