Wu, Di [P:(DE-HGF)0] ; Chen, Xiang [P:(DE-HGF)0] ; Zheng, Fengshan [P:(DE-Juel1)165965] ; Du, Hongchu [P:(DE-Juel1)145710] ; Jin, Lei [P:(DE-Juel1)145711] ; Dunin-Borkowski, Rafal E. [P:(DE-Juel1)144121]