Boukhvalov, D. [P:(DE-HGF)0] ; Dobrovitski, V. [P:(DE-HGF)0] ; Kögerler, P. [P:(DE-Juel1)VDB12080] ; Al-Saqer, M. [P:(DE-HGF)0] ; Katsnelson, M. [P:(DE-HGF)0] ; Lichtenstein, A. [P:(DE-HGF)0] ; Harmon, B. [P:(DE-HGF)0]