Morphology and evolution of size-selected metallic clusters deposited on a metal surface: Ag19+ / Pd(100)
We study size-selected deposition of Ag/sub 19//sup +/ clusters on Pd(100) at total kinetic energies of 20 and 95 eV using thermal energy atom scattering and molecular-dynamics simulations. Contrary to the case of Ag/sub 7/ where fragmentation is crucial to explain the data, the deposition leads at low temperature to noncompact structures localized around the impact point. We propose a model in which morphology changes take place between 200 and 300 K resulting in well-separated compact structures.
Keywords: atom surface impact; metal clusters; molecular dynamics method; palladium ; silver morphology ; evolution ; size selected metallic clusters; metal surface; Ag 19 +Pd100; size selected deposition; total kinetic energies; thermal energy atom scattering; molecular dynamics simulations; low temperature; noncompact structures; impact point; model ; 95 eV; 20 eV; Pd ; Ag A6146 (Solid clusters including fullerenes and nanoparticles); A7920N (Atom molecule and ion surface impact); A61; A79; A6; A7
Record created on 2006-07-25, modified on 2016-08-08