1. Leibniz Institute for Solid State and Materials Science Dresden (IFW Dresden) 01069 Dresden Germany
2. Institute of Applied Physics Technische Universität Dresden 01062 Dresden Germany
3. Condensed Matter Physics and Materials Science Department Brookhaven National Laboratory Upton NY 11973 USA
4. Research Center for Functional Materials National Institute for Materials Science 1‐1 Namiki Tsukuba 305‐0044 Japan
5. International Center for Materials Nanoarchitectonics National Institute for Materials Science 1‐1 Namiki Tsukuba 305‐0044 Japan
6. Department of Physics University of Naples Federico II Naples 80125 Italy
7. Terra Quantum AG Kornhausstrasse 25 St. Gallen CH‐9000 Switzerland