Non-adiabaticity and single-electron transport driven by surface acoustic waves

Abstract

Single-electron transport driven by surface acoustic waves (SAW) through a narrow constriction, formed in two-dimensional electron gas, is studied theoretically. Due to long-range Coulomb interaction, the tunneling coupling between the electron gas and the moving minimum of the SAW-induced potential rapidly decays with time. As a result, nonadiabaticiy sets a limit for the accuracy of the quantization of acoustoelectric current.

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• Time-dependent transport in interacting and non-interacting mesoscopic systems
• Towards single-electron metrology
• Giant Oscillations of Acoustoelectric Current in a Quantum Channel

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