1. NaMLab gGmbH, Noethnitzer Straße 64, 01187 Dresden, Germany
2. IFW Dresden, Helmholtz Straße, Dresden, Germany
3. Department of Materials Science and Engineering, North Carolina State University, Raleigh, North Carolina 27695-7907, United States
4. Chair of Nanoelectronic Materials, TU Dresden, 01062 Dresden, Germany