Electronic structure of O-doped SiGe calculated by DFT + U method
Zhao Zong-Yan1, 2, †, , Yang Wen3, Yang Pei-Zhi3
       

Top panels: the stable configurations of O-doped SiGe (110) surface (Only the top SiGe bi-layer are shown here.); middle panels: the corresponding contour maps of electron density; bottom panels: the corresponding contour maps of electron density difference.