Full counting statistics of renormalized dynamics in open quantum transport system

Details Full counting statistics of renormalized dynamics in open quantum transport system Full counting statistics of renormalized dynamics in open quantum transport system

2011-03-04

arxiv.org/abs/1103.0892v2

Phys. Lett. A 376, 59-64 (2011)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

9 pages, 5 figures

Scientific paper

10.1016/j.physleta.2011.10.037

The internal dynamics of a double quantum dot system is renormalized due to coupling respectively with transport electrodes and a dissipative heat bath. Their essential differences are identified unambiguously in the context of full counting statistics. The electrode coupling caused level detuning renormalization gives rise to a fast-to-slow transport mechanism, which is not resolved at all in the average current, but revealed uniquely by pronounced super-Poissonian shot noise and skewness. The heat bath coupling introduces an interdot coupling renormalization, which results in asymmetric Fano factor and an intriguing change of line shape in the skewness.

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