1. NanoSYD, Mads Clausen Institute and DIAS Danish Institute for Advanced Study, University of Southern Denmark, Alsion 2, DK-6400 Sonderborg, Denmark.
2. Centre of Low Temperature Physics, Institute of Experimental Physics, Slovak Academy of Sciences & Faculty of Science, P. J. Safarik University, Kosice, Slovakia.
3. Theory of Nanomaterials Group, KU Leuven, Celestijnenlaan 200F, B-3001 Heverlee, Belgium.
4. Department of Chemistry, National University of Singapore, Block S8 Level 3, 3 Science Drive 3, Singapore 117543, Singapore.
5. Helmholtz-Zentrum Dresden-Rossendorf, Institute of Ion Beam Physics and Materials Research, Bautzner Landstr. 400, 01328 Dresden, Germany.
6. School of Chemistry, University of Bristol, Bristol BS8 1TS, UK.
7. Laboratory of Solid State Physics and Magnetism, KU Leuven, B-3001 Heverlee, Belgium.
8. Heinz Maier-Leibnitz Zentrum (MLZ), Technische Universität München, Lichtenbergstrasse 1, 85748 Garching, Germany.
9. Institute for Nanoscale Physics and Chemistry, KU Leuven, 3001 Heverlee, Belgium.