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

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

1999-08-06

arxiv.org/abs/cond-mat/9908096v2

Phys. Rev. B 60, R16291 (1999)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

10.1103/PhysRevB.60.R16291

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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