Loukakos, P. A. [P:(DE-HGF)0] ; Lisowski, M. [P:(DE-HGF)0] ; Bihlmayer, G. [P:(DE-Juel1)130545] ; Blügel, S. [P:(DE-Juel1)130548] ; Wolf, M. [P:(DE-HGF)0] ; Bovensiepen, U. [P:(DE-HGF)0]