Düsseldorf 2007 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 3: Atomic Clusters I
A 3.2: Vortrag
Montag, 19. März 2007, 11:00–11:15, 5M
PES Study of Silicon Doped Gold Cluster Anions — •Kiran Majer, Oleg Kostko, and Bernd v. Issendorff — Institut für Physik, Universität Freiburg, Stefan-Meier-Straße 19, 79104 Freiburg
The electronic structure of silicon doped gold cluster anions were investigated by photoelectron spectroscopy (PES). For certain cluster sizes the photoelectron spectra reveal electronic shell patterns, which can be explained within the Jellium model. Furthermore the spectral similarities between AuN− and Au(N−4)Si− show, that the silicon dopant contributes four delocalized electrons to the cluster.
Doping noble metal cluster with impurities changes the properties of the cluster significantly. Since gold cluster have various applications in molecular electronic devices, catalysts, and biological diagnostics, there is an increasing interest to understand how the properties of nano particles can be influenced by dopant.