Long, Nguyen Hoang [P:(DE-Juel1)143632] ; Mavropoulos, P. [P:(DE-Juel1)130823] ; Heers, S. [P:(DE-HGF)0] ; Zimmermann, Bernd [P:(DE-Juel1)131065] ; Blugel, S. [P:(DE-Juel1)130548] ; Mokrousov, Y. [P:(DE-Juel1)130848]