Figure 5From: Nickel-containing nano-sized islands grown on Ge(111)-c(2 × 8) and Ag/Ge(111)-(√3 × √3) surfacesEmpty-state STM images showing Ni-containing structures. (a) Hexagonal island on Ge(111)-c(2 × 8) surface. (b) Hexagonal island on Ag/Ge(111)-√3 × √3 surfaces. (c) 7 × 7 island on Ge(111)-c(2 × 8) surface. (d) 7 × 7 island on Ag/Ge(111)-√3 × √3 surfaces. The notations in left upper corners represent the specified structures.Back to article page