title: Planar vanadium oxide clusters: two-dimensional evaporation and diffusion on Rh(111).
abstract: The formation of novel vanadium oxide cluster molecules by oxidative two-dimensional evaporation from vanadium oxide nanostructures is reported on a Rh(111) metal surface. The structure and stability of the planar V6O12 clusters and the physical origin of their 2D evaporation process have been elucidated by high-resolution scanning tunneling microscopy (STM) and ab initio density functional theory calculations. The surface diffusion of the clusters has been followed in elevated-temperature STM experiments, and the diffusion parameters have been extracted, indicating diffusion by hopping of the entire surface stabilized cluster units.
authors.affiliation: Institut für Experimentalphysik, Karl-Franzens-Universität Graz, A-8010 Graz, Austria.
authors.forename: J
authors.initials: J
authors.lastname: Schoiswohl
authors.forename: G
authors.initials: G
authors.lastname: Kresse
authors.forename: S
authors.initials: S
authors.lastname: Surnev
authors.forename: M
authors.initials: M
authors.lastname: Sock
authors.forename: M G
authors.initials: MG
authors.lastname: Ramsey
authors.forename: F P
authors.initials: FP
authors.lastname: Netzer