Conductance in a periodically doped quantum wire

Details Conductance in a periodically doped quantum wire Conductance in a periodically doped quantum wire

1997-10-24

arxiv.org/abs/cond-mat/9710265v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

10 pages Latex

Scientific paper

In this paper we will give a short rewiew about the conductance of a mesoscopic waveguide strip with a few impurities. Green-function method is used allowing to treat systems with low number of impurities, not only the completly clean case. Investigating a wire containing Dirac-delta potentials (modelling the impurities) we found that increasing number of impurities can cause a transition of the structure of conductance. The staircase like structure of the clean system vanishes and the conductance of a system containing finite number of impurities located periodically will be determined by the band structure of

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