Charge Pumping in Carbon Nanotubes
Peter Leek, Mark Buitelaar, Valery Talyanskii, Charles Smith, David, Anderson, Geb Jones, Jiang Wei, David Cobden
TL;DR
This paper demonstrates charge pumping in semiconducting carbon nanotubes using a traveling potential wave, enabling controlled transport of electron or hole packets and discussing potential for single-electron pump applications.
Contribution
It introduces a method for charge pumping in carbon nanotubes with tunable electron or hole transport, advancing nanotube-based single-electron device development.
Findings
Charge pumping observed in insulating nanotubes.
Transport occurs via charge packets carried by the wave.
Potential for nanotube-based single-electron pumps.
Abstract
We demonstrate charge pumping in semiconducting carbon nanotubes by a traveling potential wave. From the observation of pumping in the nanotube insulating state we deduce that transport occurs by packets of charge being carried along by the wave. By tuning the potential of a side gate, transport of either electron or hole packets can be realized. Prospects for the realization of nanotube based single-electron pumps are discussed.
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