1. TU Bergakademie Freiberg; Institute of Materials Science; 09599 Freiberg Germany
2. Karlsruhe Institute of Technology (KIT); Institute of Nanotechnology; 76344 Eggenstein-Leopoldshafen Germany
3. Institute of Solid State Physics; Russian Academy of Sciences; 142432 Chernogolovka Russia
4. Laboratory of Hybrid Nanomaterials; National University of Science and Technology «MISIS»; 119049 Moscow Russia
5. TU Bergakademie Freiberg; Institute of Experimental Physics; 09599 Freiberg Germany