1. Chair of Solid State and Materials Chemistry, Institute of Physics, University of Augsburg, Universitätsstrasse 1, D-86159 Augsburg, Germany
2. Theoretical Chemistry, Technische Universität München, Lichtenbergstrasse 4, D-85747 Garching, Germany
3. Institute of Physics, Pedagogical University, ul. Podchorążych 2, 30-084 Kraków, Poland
4. Academic Center for Materials and Nanotechnology, AGH University of Science and Technology, 30 Mickiewicza Av., 30-059 Kraków, Poland
5. Experimental Physics V, Center for Electronic Correlations and Magnetism, Institute of Physics, University of Augsburg, Universitätsstrasse 1, D-86159 Augsburg, Germany