Inter-edge tunneling in the fractional quantum Hall regime at temperatures down to 20mK is investigated by using split-gate constrictions to induce a controllable scattering between the edges. Both weak- and strong-backscattering regimes are explored. Tunneling characteristics as a function of split-gate bias as well as temperature are measured and compared with available theories.
Quasi-particle tunneling between fractional quantum Hall edges
Roddaro S;Pellegrini V;Biasiol G;Lucia S;
2004
Abstract
Inter-edge tunneling in the fractional quantum Hall regime at temperatures down to 20mK is investigated by using split-gate constrictions to induce a controllable scattering between the edges. Both weak- and strong-backscattering regimes are explored. Tunneling characteristics as a function of split-gate bias as well as temperature are measured and compared with available theories.File in questo prodotto:
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