1. Department of Material Science Kiel University Kaiserstr. 2 D‐24143 Kiel Germany
2. Kiel Nano, Surface and Interface Science (KiNSIS) Kiel University Christian‐Albrechts‐Platz 4 D‐24118 Kiel Germany
3. Department of Electrical and Information Engineering Kiel University Kaiserstr. 2 D‐24143 Kiel Germany
4. Fraunhofer Institute for Silicon Technology (ISIT) Fraunhoferstr. 1 D‐25524 Itzehoe Germany
5. Fraunhofer Institute for Applied Solid State Physics (IAF) Tullastr. 72 D‐79108 Freiburg Germany
6. Leibniz Institute of Surface Engineering (IOM) Permoserstr. 15 D‐04318 Leipzig Germany