1. Cluster of Excellence: Engineering of Advanced Materials; Friedrich-Alexander-University of Erlangen-Nürnberg; Nägelsbachstrasse 49b 91052 Erlangen Germany
2. PULS Group; Institute for Theoretical Physics; Friedrich-Alexander-University of Erlangen-Nürnberg; Nägelsbachstrasse 49b 91052 Erlangen Germany
3. II. Institut für Theoretische Physik; Universität Stuttgart; Pfaffenwaldring 57 70550 Stuttgart Germany
4. Institute of Particle Technology; Friedrich-Alexander-University of Erlangen-Nürnberg; Cauerstr. 4 91058 Erlangen Germany
5. Institute Ruder Bošković; Division of Physical Chemistry; Bijenička cesta 54 10000 Zagreb Croatia