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Quantized charge pumping by surface acoustic waves in ballistic quasi-1D channels

Vyacheslavs Kashcheyevs·Amnon Aharony·Ora Entin-Wohlman
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Abstract

Adiabatic pumping of electrons induced by surface acoustic waves (SAWs) in a ballistic quasi-1D quantum channel is considered using an exactly solvable tight-binding model for non-interacting electrons. The single-electron degrees of freedom, responsible for acoustoelectric current quantization, are related to the transmission resonances. We study the influence of experimentally controllable parameters (SAW power, gate voltage, source-drain bias, amplitude and phase of a secondary SAW beam) on the plateau-like structure of the acoustoelectric current. The results are consistent with existing experimental observations.

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Vyacheslavs Kashcheyevs, Amnon Aharony, Ora Entin-Wohlman. 2004-02-24. Quantized charge pumping by surface acoustic waves in ballistic quasi-1D channels. https://doi.org/10.1140/epjb%2Fe2004-00204-0

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