Quantized Adiabatic Charge Transport in a Carbon Nanotube
arXiv:cond-mat/0105220 · doi:10.1103/PhysRevLett.87.276802
Abstract
The coupling of a metallic Carbon nanotube to a surface acoustic wave (SAW) is proposed as a vehicle to realize quantized adiabatic charge transport in a Luttinger liquid system. We demonstrate that electron backscattering by a periodic SAW potential, which results in miniband formation, can be achieved at energies near the Fermi level. Electron interaction, treated in a Luttinger liquid framework, is shown to enhance minigaps and thereby improve current quantization. Quantized SAW induced current, as a function of electron density, changes sign at half-filling.
5 pages, 2 figures
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