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Chlorine-enhanced surface mobility of Au(100).
Chemphyschem
January 2013
Institut für Elektrochemie, Universität Ulm, Albert-Einstein-Allee 47, D-89069 Ulm, Germany.
Motivated by experimental studies of two-dimensional Ostwald ripening on Au(100) electrodes in chlorine-containing electrolytes, we have studied diffusion processes using density functional theory. We find that chlorine has a propensity to temporary form AuCl complexes, which diffuse significantly faster than gold adatoms. With and without chlorine, the lowest activation energy is found for the exchange mechanism.
View Article and Find Full Text PDFPotential dependence of step and kink energies on Au(100) electrodes in sulfuric acid.
Faraday Discuss
September 2002
Forschungszentrum Jülich, Institut für Schichten und Grenzflächen ISG 3, Germany.
Using electrochemical STM we studied monolayer high Au islands on Au(100) electrodes in sulfuric acid as a function of the electrode potential. We made use of theoretical and experimental methods recently developed for UHV experiments on metal islands. It is demonstrated that these models are likewise applicable to islands on metal electrodes in a liquid environment.
View Article and Find Full Text PDFGiesen and ibach reply:
Phys Rev Lett
July 2000
IGV, Forschungszentrum Julich 52425 Julich, Germany.
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