Transport suppression in heterostructures driven by an ac gate voltage

Details Transport suppression in heterostructures driven by an ac gate voltage Transport suppression in heterostructures driven by an ac gate voltage

2004-12-09

arxiv.org/abs/cond-mat/0412221v2

Chem. Phys. 319, 360-367 (2005)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

18 pages, 4 figures, elsart style, corrected proof

Scientific paper

10.1016/j.chemphys.2005.03.030

We explore the possibility of inducing in heterostructures driven by an ac gate voltage the coherent current suppression recently found for nanoscale conductors in oscillating fields. The destruction of current is fairly independent of the transport voltage, but can be controlled by the driving amplitude and frequency. Within a tight-binding approximation, we obtain analytical results for the average current in the presence of driving. These results are compared against an exact numerical treatment based on a transfer-matrix approach.

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