Non-adiabaticity and single-electron transport driven by surface acoustic waves
arXiv:cond-mat/9908096 · doi:10.1103/PhysRevB.60.R16291
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.