1. Institute for Integrative NanosciencesInstitute for Solid State and Materials Research Dresden (IFW Dresden) 01069 Dresden Germany
2. Institute for Solid state ResearchInstitute for Solid State and Materials Research Dresden (IFW Dresden) 01069 Dresden Germany
3. Material Systems for NanoelectronicsChemnitz University of Technology 09107 Chemnitz Germany
4. Center for Advancing Electronics DresdenDresden University of Technology 01062 Dresden Germany