Charge pumping in carbon nanotubes

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...

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Bibliographic Details
Published in:Physical review letters 2005-12, Vol.95 (25), p.256802.1-256802.4, Article 256802
Main Authors: LEEK, P. J, BUITELAAR, M. R, TALYANSKII, V. I, SMITH, C. G, ANDERSON, D, JONES, G. A. C, WEI, J, COBDEN, D. H
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures
Electronic transport in multilayers, nanoscale materials and structures
Exact sciences and technology
Physics
Quantum dots
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Summary: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.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.95.256802