6533b826fe1ef96bd12847bf

RESEARCH PRODUCT

Robust single-parameter quantized charge pumping

Vyacheslavs KashcheyevsKlaus PierzG. HeinUwe SiegnerBernd KaestnerHans Werner Schumacher

subject

PhysicsPhysics and Astronomy (miscellaneous)Condensed Matter - Mesoscale and Nanoscale PhysicsRF power amplifierNanowireFOS: Physical sciencesTopologyCondensed Matter::Mesoscopic Systems and Quantum Hall EffectSignalFeature (computer vision)Robustness (computer science)ModulationMesoscale and Nanoscale Physics (cond-mat.mes-hall)ScalabilityCurrent (fluid)

description

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.

yearjournalcountryeditionlanguage
2008-03-06
10.1063/1.2928231http://arxiv.org/abs/0803.0869