Enhanced quantized current driven by surface acoustic waves

Details Enhanced quantized current driven by surface acoustic waves Enhanced quantized current driven by surface acoustic waves

2000-06-30

arxiv.org/abs/cond-mat/0006487v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

3pages, 4eps-figures

Scientific paper

10.1063/1.1319190

We present the experimental realization of different approaches to increase the amount of quantized current which is driven by surface acoustic waves through split gate structures in a two dimensional electron gas. Samples with driving frequencies of up to 4.7 GHz have been fabricated without a deterioration of the precision of the current steps, and a parallelization of two channels with correspondingly doubled current values have been achieved. We discuss theoretical and technological limitations of these approaches for metrological applications as well as for quantum logics.

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