Engels, S. [P:(DE-HGF)0] ; Terrés, B. [P:(DE-HGF)0] ; Epping, A. [P:(DE-Juel1)145909] ; Khodkov, T. [P:(DE-HGF)0] ; Watanabe, K. [P:(DE-HGF)0] ; Taniguchi, T. [P:(DE-HGF)0] ; Beschoten, B. [P:(DE-HGF)0] ; Stampfer, C. [P:(DE-HGF)0]