Directed transport born from chaos in asymmetric antidot structures
arXiv:cond-mat/0509679 · doi:10.1140/epjb/e2006-00295-5
Abstract
It is shown that a polarized microwave radiation creates directed transport in an asymmetric antidot superlattice in a 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 high currents can be reached at a relatively low microwave power. This effect opens new possibilities for microwave control of transport in asymmetric superlattices.
8 pages, 10 figures
References in corpus (7)
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- Brownian motors
- Ratchet-like dynamics of fluxons in annular Josephson junctions driven by bi-harmonic microwave fields
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Cited by in corpus (8)
- Tunable transport with broken space-time symmetries
- Classical ratchet effects in heterostructures with a lateral periodic potential
- Experimental investigation of the ratchet effect in a two-dimensional electron system with broken spatial inversion symmetry
- Photogalvanic current in artificial asymmetric nanostructures
- Ratchet transport of interacting particles
- Relativistic graphene ratchet on semidisk Galton board
- Magnetization of ballistic quantum dots induced by a linear-polarized microwave field
- Symmetry breaking for ratchet transport in presence of interactions and magnetic field