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)

STM image after omitting the information of the superstructure with a periodicity of (a) 0.44 nm and (c) 0.25 nm. (b) Line profile along the blue line in panel (a), revealing the periodicity of graphene after silicon intercalation (0.25 nm). (d) Line profile along the blue line in panel (c), revealing the periodicity of the silicon honeycombs underneath graphene (0.44 nm).