Size-dependent electron-electron interactions in metal nanoparticles

被引：211

作者：

Voisin, C ^{[1
]}

Christofilos, D

Del Fatti, N

Vallée, F

Prével, B

Cottancin, E

Lermé, J

Pellarin, M

Broyer, M

机构：

[1] Ecole Polytech, CNRS, Opt Quant Lab, F-91128 Palaiseau, France

[2] Univ Lyon 1, Dept Phys Mat, F-69622 Villeurbanne, France

[3] Univ Lyon 1, Spectrometrie Ion & Mol Lab, F-69622 Villeurbanne, France

来源：

PHYSICAL REVIEW LETTERS | 2000年 / 85卷 / 10期

关键词：

D O I：

10.1103/PhysRevLett.85.2200

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The internal thermalization dynamics of the conduction electrons is investigated in silver nanoparticles with radius ranging from 13 to 1.6 nm using a femtosecond IR pump-UV probe absorption saturation technique. A sharp increase of the electron energy exchange rate is demonstrated for nanoparticles smaller than 5 nm. The results are consistent with electron-electron scattering acceleration due to surface induced reduction of the Coulomb interaction screening by the conduction and corp electrons.

引用

页码：2200 / 2203

页数：4

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