1. Centre for Materials
Science and Nanotechnology, Department of Chemistry, University of Oslo, Norway, FERMiO, Gaustadallén 21, 0349 Oslo, Norway
2. Max Planck Institute for Solid State Research, Heisenbergstrasse 1, 70569 Stuttgart, Germany
3. Institute for Solid State Physics, University of Latvia, Kengaraga 8, 1063 Riga, Latvia