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Evidence for non-linear quasiparticle tunneling between fractional quantum Hall edges
Remarkable nonlinearities in the differential tunneling conductance between
fractional quantum Hall edge states at a constriction are observed in the
weak-backscattering regime. In the = 1/3 state a peak develops as
temperature is increased and its width is determined by the fractional charge.
In the range this width displays a symmetric behavior
around = 1/2. We discuss the consistency of these results with available
theoretical predictions for inter-edge quasiparticle tunneling in the
weak-backscattering regime