1. Institut für Festkörpertheorie und -optik, Friedrich-Schiller-Universität Jena and European Theoretical Spectroscopy Facility, Max-Wien-Platz 1, 07743 Jena, Germany
2. Research Center Future Energy Materials and Systems of the Research Alliance Ruhr, Faculty of Mechanical Faculty of Mechanical Engineering and ICAMS, Ruhr University Bochum, Universitätstrasse 150, 44780 Bochum, Germany
3. European Theoretical Spectroscopy Facility, Germany
4. Research Center Future Energy Materials and Systems of the Research Alliance Ruhr, Faculty of Physics and ICAMS, Ruhr University Bochum, Universitätstrasse 150, 44780 Bochum, Germany