Fig. 6: Demonstration of 1D edge state transport.
From: An epitaxial graphene platform for zero-energy edge state nanoelectronics
a 4-point conductances of sample 2, Seg. B measured from the top (G15,23; red) and the bottom (G15,67; blue); b 3-point conductances of sample 1, Seg. B measured from the top (G15,12; red) and the bottom (G15,16; blue). The perfect overlap shown in the two cases is consistent with a 1D edge state that involves both edges coherently and not with a top edge that is independent of the bottom edge which would cause the conductances, especially at CNP to be very different (see text).
