Optical absorption of small silver clusters: Ag(n), (n=4-22).
We present a joint theoretical and experimental investigation of the absorption spectra of silver clusters Ag(n) (4<or=n<or=22). The experimental spectra of clusters isolated in an Ar matrix are compared with the calculated ones in the framework of the time-dependent density functional theory. The analysis of the molecular transitions indicates that the s-electrons are responsible for the optical response of small clusters (n<or=8) while the d-electrons play a crucial role in the optical excitations for larger n values.
Harb
M
M
Universite Lyon 1, CNRS, LASIM UMR 5579, 43 Boulevard du 11 Novembre 1918, F-69622 Villeurbanne, France.
Rabilloud
F
F
Simon
D
D
Rydlo
A
A
Lecoultre
S
S
Conus
F
F
Rodrigues
V
V
Félix
C
C