title: Optical absorption of small silver clusters: Ag(n), (n=4-22).
abstract: 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.
authors.affiliation: Universite Lyon 1, CNRS, LASIM UMR 5579, 43 Boulevard du 11 Novembre 1918, F-69622 Villeurbanne, France.
authors.forename: M
authors.initials: M
authors.lastname: Harb
authors.forename: F
authors.initials: F
authors.lastname: Rabilloud
authors.forename: D
authors.initials: D
authors.lastname: Simon
authors.forename: A
authors.initials: A
authors.lastname: Rydlo
authors.forename: S
authors.initials: S
authors.lastname: Lecoultre
authors.forename: F
authors.initials: F
authors.lastname: Conus
authors.forename: V
authors.initials: V
authors.lastname: Rodrigues
authors.forename: C
authors.initials: C
authors.lastname: Félix