title: Quenching of the magnetic moment of a transition metal dopant in silver clusters.
abstract: Single magnetic atoms embedded in a nonmagnetic host exhibit the Kondo effect in the bulk limit, while in very small molecules the magnetic atom is hardly affected by the matrix. In a combined theoretical (density functional theory) and experimental (photofragmentation and mass spectrometry) study we consider the intermediate case of nanometer sized transition-metal-doped silver clusters. In particular, we provide experimental evidence for enhanced stability of the cobalt-doped silver cluster Ag10Co+ and show theoretically that it has a symmetric endohedral geometry with a closed 18-electron singlet electronic shell structure. This implies that the magnetic moment on the cobalt atom is quenched.
authors.affiliation: Laboratorium voor Vaste-Stoffysica en Magnetisme, Katholieke Universiteit Leuven, Celestijnenlaan 200D, B-3001 Leuven, Belgium.
authors.forename: E
authors.initials: E
authors.lastname: Janssens
authors.forename: S
authors.initials: S
authors.lastname: Neukermans
authors.forename: H M T
authors.initials: HM
authors.lastname: Nguyen
authors.forename: M T
authors.initials: MT
authors.lastname: Nguyen
authors.forename: P
authors.initials: P
authors.lastname: Lievens