Fig. 5: Finite-bias measurements at ν = 1/3.

a Differential conductance measurements at ν = 1/3, B = 7.4 T. b Differential conductance oscillation amplitude vs. VSD. The spacing between nodes (which appear as minima in the plot) are indicated. It is noteworthy that the spacing between the central nodes is somewhat more narrow than the outer nodes, which may be an indication of Luttinger liquid behavior. c DC current versus δVg and VSD. d DC current oscillation amplitude versus VSD. The minima in the amplitude correspond to nodes in the interference pattern. As predicted by26, the central nodes have narrower spacing than the outer ones.