1. Experimental Physics
2. Universität Bayreuth
3. 95440 Bayreuth
4. Germany
5. Theoretical Physics
6. Mathematics, Institute of Physics and Mathematics
7. Institute of Molecular Physics
8. Polish Academy of Sciences
9. 60-179 Poznań
10. Poland
11. Institute of Physics and Center for Interdisciplinary Nanostructure Science and Technology (CINSaT)
12. University of Kassel
13. D-34132 Kassel