Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2010-09-06
Physical Review B 83, 035308 (2011)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
9 pages, 6 figures
Scientific paper
10.1103/PhysRevB.83.035308
We derive a general capacitive interaction model for an antidot-based interferometer in the integer quantum Hall regime, and study Aharonov-Bohm resonances in a single antidot with multiple bound modes, as a function of the external magnetic field or the gate voltage applied to the antidot. The pattern of Aharonov-Bohm resonances is significantly different from the case of noninteracting electrons. The origin of the difference includes charging effects of excess charges, charge relaxation between the bound modes, the capacitive interaction between the bound modes and the extended edge channels nearby the antidot, and the competition between the single-particle level spacing and the charging energy of the antidot. We analyze the patterns for the case that the number of the bound modes is 2, 3, or 4. The results agree with recent experimental data.
Lee Richard W.
Sim Hyung-Seok
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