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arXiv · 0803.0869

Robust single-parameter quantized charge pumping

B. Kaestner·V. Kashcheyevs·G. Hein·K. Pierz·U. Siegner·H. W. Schumacher
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Abstract

This paper investigates a scheme for quantized charge pumping based on single-parameter modulation. The device was realized in an AlGaAs-GaAs gated nanowire. We find a remarkable robustness of the quantized regime against variations in the driving signal, which increases with applied rf power. This feature together with its simple configuration makes this device a potential module for a scalable source of quantized current.

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B. Kaestner, V. Kashcheyevs, G. Hein, K. Pierz, U. Siegner, H. W. Schumacher. 2008-03-06. Robust single-parameter quantized charge pumping. https://doi.org/10.1063/1.2928231

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