Instituto de Ciencia de Materiales de Madrid
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Charge transport through a molecule driven by a high-frequency field

Sigmund Kohler, Sébastien Camalet, Michael Strass, Jörg Lehmann, Gert-Ludwig Ingold, and Peter Hänggi
Chem. Phys. 296, 243 (2004)

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.

[ICMM-CSIC] [Condensed Matter Theory]
last modified: 15.3.2024 by Sigmund Kohler