Charge transport through a molecule driven by a high-frequency field

Details Charge transport through a molecule driven by a high-frequency field Charge transport through a molecule driven by a high-frequency field

2003-06-27

arxiv.org/abs/cond-mat/0306704v1

Chem. Phys. 296, 243-249 (2004)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

15 pages, 5 figures, elsart style

Scientific paper

10.1016/j.chemphys.2003.09.023

We study the current and the associated noise for the transport through a two-site molecule driven by an external oscillating field. Within a high-frequency approximation, the time-dependent Hamiltonian is mapped to a static one with effective parameters that depend on the driving amplitude and frequency. This analysis allows an intuitive physical picture explaining the nontrivial structure found in the noise properties as a function of the driving amplitude. The presence of dips in the Fano factor permits a control of the noise level by means of an appropriate external driving.

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