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

被引：34

作者：

Burgin, J. ^{[2
]}

Langot, P. ^{[2
]}

Arbouet, A. ^{[1
]}

Margueritat, J. ^{[1
,3
]}

Gonzalo, J. ^{[3
]}

Afonso, C. N. ^{[3
]}

Vallee, F. ^{[4
]}

Mlayah, A. ^{[1
]}

Rossell, M. D. ^{[5
]}

Van Tendeloo, G. ^{[5
]}

机构：

[1] Univ Toulouse, CNRS, CEMES, F-31055 Toulouse, France

[2] Univ Bordeaux 1, CPMOH, F-33405 Talence, France

[3] CSIC, Inst Opt, Laser Proc Grp, E-28006 Madrid, Spain

[4] Univ Lyon 1, CNRS, LASIM, F-69622 Villeurbanne, France

[5] Univ Antwerp, EMAT, B-2020 Antwerp, Belgium

来源：

NANO LETTERS | 2008年 / 8卷 / 05期

关键词：

D O I：

10.1021/nl073123r

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Using 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.

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收藏

页码：1296 / 1302

页数：7

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