Quasi-particle Tunneling Through a Barrier in the Fractional Quantum Hall Regime

Details Quasi-particle Tunneling Through a Barrier in the Fractional Quantum Hall Regime Quasi-particle Tunneling Through a Barrier in the Fractional Quantum Hall Regime

2005-03-25

arxiv.org/abs/cond-mat/0503608v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.95.136803

Tunneling of fractionally charged quasi-particles (QPs) through a barrier is considered in the context of a multiply connected geometry. In this geometry global constraints do not prohibit such a tunneling process. The tunneling amplitude is evaluated and the crossover from mesoscopic QP-dominated to electron-dominated tunneling as the system's size is increased is found. The presence of disorder enhances both electron and QP tunneling rates.

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