Generation of palladium cluster on Au(111)- experiments and simulations

M. G. DEL PÓPOLO; E. P. M. LEIVA; H. KLEINE; J. MEIER; U. STIMMING; M. M. MARISCAL; W. SCHMICKLER

APPLIED PHYSICS. A, MATERIALS SCIENCE & PROCESSING (PRINT)

American Institute of Physics

Año: 2002 vol. 81 p. 2635 - 2635

he properties of palladium clusters, generated with the electrochemical scanning tunnelingmicroscope, have been investigated both by experiments and by computer simulations. The clustersare found to be larger and more stable if the tip is moved further towards the electrode surface inthe generation process. The simulations suggest that the larger clusters consist of a palladium–goldmixture, which is more stable than pure palladium. Dissolution of the clusters occurs from the edgesrather than layer by layer.