El-Kareh, L. [P:(DE-HGF)0] ; Mehring, P. [P:(DE-HGF)0] ; Caciuc, V. [P:(DE-Juel1)130583] ; Atodiresei, N. [P:(DE-Juel1)130513] ; Beimborn, A. [P:(DE-HGF)0] ; Blügel, S. [P:(DE-Juel1)130548] ; Westphal, C. [P:(DE-HGF)0]