Figure 4

(a) Top view of the optimized graphene-MoS2 interface, and (b) a side view of the three-dimensional charge density difference plot for the interface between a graphene sheet and a MoS2 monolayer. Red, yellow and green balls represent Mo, S, and C atoms, respectively. Purple and orange isosurfaces represent charge accumulation and depletion in the 3D space with an isovalue of 0.001 e/Ǻ3.