Fabrication and properties of silicene and silicene–graphene layered structures on Ir (111)

Meng Lei^a),^b), Wang Ye-Liang†^b), Zhang Li-Zhi^b), Du Shi-Xuan^b), Gao Hong-Jun‡^b)

The STM images ((a) and (c)) by intentionally omitting the information of the superstructure presented in Fig. 8 with a periodicity of 0.44 nm and 0.25 nm ((b) and (d)), respectively. These images indicate that the topmost graphene layer (2.5-nm lattice) is intact and continuous (a), and the underlying silicon layer has a honeycomb structure in the upper-left region (c).^{[ 74 ]}