Tunable dynamical channel blockade in double-dot Aharonov-Bohm interferometers

Details Tunable dynamical channel blockade in double-dot Aharonov-Bohm interferometers Tunable dynamical channel blockade in double-dot Aharonov-Bohm interferometers

2008-11-28

arxiv.org/abs/0811.4723v2

Phys. Rev. B 79, 165319 (2009)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

published version, 10 pages, 10 figures

Scientific paper

10.1103/PhysRevB.79.165319

We study electronic transport through an Aharonov-Bohm interferometer with single-level quantum dots embedded in the two arms. The full counting statistics in the shot-noise regime is calculated to first order in the tunnel-coupling strength. The interplay of interference and charging energy in the dots leads to a dynamical channel blockade that is tunable by the magnetic flux penetrating the Aharonov-Bohm ring. We find super-Poissonian behavior with diverging second and higher cumulants when the Aharonov-Bohm flux approaches an integer multiple of the flux quantum.

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