Abstract.
It is shown that a polarized microwave radiation creates directed transport in an asymmetric antidot superlattice in two dimensional electron gas. A numerical method is developed that allows to establish the dependence of this ratchet effect on several parameters relevant for real experimental studies. It is applied to the concrete case of a semidisk Galton board where the electron dynamics is chaotic in the absence of microwave driving. The obtained results show that strong currents can be reached at a relatively low microwave power. This effect opens new possibilities for microwave control of transport in asymmetric superlattices.
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Chepelianskii, A. Microwave control of directed transport in asymmetric antidot structures. Eur. Phys. J. B 52, 389–396 (2006). https://doi.org/10.1140/epjb/e2006-00295-5
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DOI: https://doi.org/10.1140/epjb/e2006-00295-5