Delocalization induced by low-frequency driving in disordered superlattices

Details Delocalization induced by low-frequency driving in disordered superlattices Delocalization induced by low-frequency driving in disordered superlattices

2005-11-08

arxiv.org/abs/cond-mat/0511202v1

Physics

Condensed Matter

Disordered Systems and Neural Networks

5 pages, 4 figures

Scientific paper

10.1103/PhysRevB.73.073104

We study the localization properties of disordered semiconductor superlattices driven by ac-fields. The localization length of the electrons in the superlattice increases when the frequency of the driving field is smaller than the miniband width. We show that there is an optimal value of the amplitude of the driving field for which the localization length of the system is maximal. This maximum localization length increases with the inverse of the driving frequency.

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