title: Nonlinear quasiparticle tunneling between fractional quantum hall edges.
abstract: 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 nu=1/3 state a peak develops as temperature is increased and its width is determined by the fractional charge. In the range 2/3</=nu</=1/3 this width displays a symmetric behavior around nu=1/2. We discuss the consistency of these results with available theoretical predictions for interedge quasiparticle tunneling in the weak-backscattering regime.
authors.affiliation: NEST-INFM and Scuola Normale Superiore, I-56126 Pisa, Italy.
authors.forename: Stefano
authors.initials: S
authors.lastname: Roddaro
authors.forename: Vittorio
authors.initials: V
authors.lastname: Pellegrini
authors.forename: Fabio
authors.initials: F
authors.lastname: Beltram
authors.forename: Giorgio
authors.initials: G
authors.lastname: Biasiol
authors.forename: Lucia
authors.initials: L
authors.lastname: Sorba
authors.forename: Roberto
authors.initials: R
authors.lastname: Raimondi
authors.forename: Giovanni
authors.initials: G
authors.lastname: Vignale