Emelyanov, A. Y. [P:(DE-HGF)0] ; Pertsev, S. [P:(DE-HGF)0] ; Hoffmann-Eifert, S. [P:(DE-Juel1)VDB3102] ; Boettger, U. [P:(DE-HGF)0] ; Waser, R. [P:(DE-Juel1)131022]