Coulomb Blockade and Kondo Effect in a Quantum Hall Antidot

Details Coulomb Blockade and Kondo Effect in a Quantum Hall Antidot Coulomb Blockade and Kondo Effect in a Quantum Hall Antidot

2003-05-28

arxiv.org/abs/cond-mat/0305642v2

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

3 figures, to appear in Physical Review Letters

Scientific paper

10.1103/PhysRevLett.91.266801

We propose a general capacitive model for an antidot, which has two localized edge states with different spins in the quantum Hall regime. The capacitive coupling of localized excess charges, which are generated around the antidot due to magnetic flux quantization, and their effective spin fluctuation can result in Coulomb blockade, h/(2e) Aharonov-Bohm oscillations, and the Kondo effect. The resultant conductance is in qualitative agreement with recent experimental data.

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