Time: 10:00 a.m.
Place: IC 02/718
Mathias Getzlaff, Universität Düsseldorf, Düsseldorf, Germany
Hydrogen in metals represents a fascinating field from a technological point of view, e.g. switchable mirrors and hydrogen storage devices, as well as for fundamental research. Due to the extremily small dimension of a hydrogen atom its diffusion properties are significantly different compared to atoms of other elements. In order to understand the influence of hydrogen to nanoscale thin film systems, the prerequisite is the characterization of the initial steps. Thus, I will report on the adsorption of hydrogen on a metal surface, the subsequent absorption due to the incorporation and the following diffusion process which results in material changes like embrittlement. This investigation was carried out by means of scanning tunneling microscopy and spectroscopy which enables to detect the different processes with highest lateral resolution.