The Quantum Hall Effect and Inter-edge State Tunneling Within a Barrier

Details The Quantum Hall Effect and Inter-edge State Tunneling Within a Barrier The Quantum Hall Effect and Inter-edge State Tunneling Within a Barrier

1995-02-08

arxiv.org/abs/cond-mat/9502031v2

Physics

Condensed Matter

RevTeX + 4 postscript figures. Self-unpacking uuencoded files. Unpacking instructions are at the beginning of the files. To ap

Scientific paper

10.1103/PhysRevB.51.7650

We have introduced a controllable nano-scale incursion into a potential barrier imposed across a two-dimensional electron gas, and report on the phenomena that we observe as the incursion develops. In the quantum Hall regime, the conductance of this system displays quantized plateaus, broad minima and oscillations. We explain these features and their evolution with electrostatic potential geometry and magnetic field as a progression of current patterns formed by tunneling between edge and localized states within the barrier.

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