Stationary drag photocurrent caused by strong running wave in quantum wire: quantization of current

Details Stationary drag photocurrent caused by strong running wave in quantum wire: quantization of current Stationary drag photocurrent caused by strong running wave in quantum wire: quantization of current

2009-12-24

arxiv.org/abs/0912.4842v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

The stationary current induced by a strong running potential wave in one-dimensional system is studied. Such a wave can result from illumination of a straight quantum wire with special grating or spiral quantum wire by circular-polarized light. The wave drags electrons in the direction correlating with the direction of the system symmetry and polarization of light. In a pure system the wave induces minibands in the accompanied system of reference. We study the effect in the presence of impurity scattering. The current is an interplay between the wave drag and impurity braking. It was found that the drag current is quantized when the Fermi level gets into energy gaps.

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