Nonlinear quasiparticle tunneling between fractional quantum hall edges |
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Authors: | Roddaro Stefano Pellegrini Vittorio Beltram Fabio Biasiol Giorgio Sorba Lucia Raimondi Roberto Vignale Giovanni |
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Affiliation: | NEST-INFM and Scuola Normale Superiore, I-56126 Pisa, Italy. |
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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. |
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