1. Institute for Integrative Nanosciences Leibniz IFW Dresden 01069 Dresden Germany
2. Material Systems for Nanoelectronics Chemnitz University of Technology 09107 Chemnitz Germany
3. Center for Materials, Architectures and Integration of Nanomembranes (MAIN) Chemnitz University of Technology 09126 Chemnitz Germany
4. Nanophysics, Faculty of Physics TU Dresden 01062 Dresden Germany