Figure 4: STM/STS at a zigzag edge.
From: Evolution of Landau levels into edge states in graphene
(a) Differential conductance spectrum on the edge is singularly different from the spectra inside the sample shown in Fig. 2. The spectrum was averaged over locations marked by the dots in panel b. (b) Topography at the zigzag edge (position 1 in Fig. 1c marked by red square). (c) Zoom-in near position 2 marked by red rectangle in Fig. 1c (~6.5 nm away from the edge) shows a transition from a honeycomb to triangular structure. Scale bars: 500 pm in b and c.
