Figure 4From: Ultra-steep side facets in multi-faceted SiGe/Si(001) Stranski-Krastanow islands Cross section of the cupola-shaped SiGe islands along the [100] and [110] substrate direction (left and right hand side, respectively). As indicated by the horizontal lines, from this shape the other known SiGe island shapes of barns, domes and pyramids can be directly derived.Back to article page