Extended Data Fig. 1: Optical image of sample A.
From: Imaging work and dissipation in the quantum Hall state in graphene
Shown are the hBN/graphene/hBN heterostructure (green), the etched regions exposing the SiO2/Si substrate (dark) and the metal contacts (yellow). The dashed rectangles mark the regions shown in Fig. 2 (red) and Supplementary Video 2 (blue). The current is applied to the bottom constriction and drained at the top contact, and the corresponding voltages Vxx and V2p are measured in the scanning-gate mode. The dashed line on the right shows the native edge of graphene encapsulated in hBN.
