Extended Data Fig. 6: Visualization of bulk current flow upon cutting off nontopological channels.
From: Imaging work and dissipation in the quantum Hall state in graphene
a, Schematic trajectories of quantum Hall edge channels with the nontopological pair of channels cut off by the hole-depleting plunger gate. b, Scanning gate Rxx(r) image in sample B at Vbg = −1.2 V, Vtg = 3 V, Vpg = −0.1 V and Idc = 1.75 µA, revealing current flowing through the bulk the in the cut-off region (diffuse red blob). c, Tac(r) acquired simultaneously with Rxx(r) showing \(\dot{Q}\) rings along the graphene boundaries due to nonlocal dissipation. The images were acquired in the dashed red area in Extended Data Fig. 2.
