Holzberger, Simon [P:(DE-HGF)0] ; Schuh, Tobias [P:(DE-HGF)0] ; Lounis, Samir [P:(DE-Juel1)130805] ; Blügel, Stefan [P:(DE-Juel1)130548] ; Wulfhekel, W. [P:(DE-Juel1)VDB17898]