Nonlinear 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 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.
Roddaro
Stefano
S
NEST-INFM and Scuola Normale Superiore, I-56126 Pisa, Italy.
Pellegrini
Vittorio
V
Beltram
Fabio
F
Biasiol
Giorgio
G
Sorba
Lucia
L
Raimondi
Roberto
R
Vignale
Giovanni
G