Influence of microwave fields on the electron transport through a quantum dot in the presence of a direct tunneling between leads

Details Influence of microwave fields on the electron transport through a quantum dot in the presence of a direct tunneling between leads Influence of microwave fields on the electron transport through a quantum dot in the presence of a direct tunneling between leads

2003-04-04

arxiv.org/abs/cond-mat/0304121v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

28 Pages, 11 Postscript figures

Scientific paper

10.1103/PhysRevB.69.165306

We consider the time-dependent electron transport through a quantum dot coupled to two leads in the presence of the additional over-dot (bridge) tunneling channel. By using the evolution operator method together with the wide-band limit approximation we derived the analytical formulaes for the quantum dot charge and current flowing in the system. The influence of the external microwave field on the time-average quantum dot charge, the current and the derivatives of the average current with respect to the gate and source-drain voltages has been investigated for a wide range of parameters.

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