Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2008-03-06
Appl. Phys. Lett. 92, 192106 (2008)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
Submitted to Appl. Phys. Lett
Scientific paper
10.1063/1.2928231
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.
Hein Georg
Kaestner Bernd
Kashcheyevs Vyacheslavs
Pierz Klaus
Schumacher Hans Werner
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