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Phys Rev Lett. 2005 Sep 30;95(14):146805. Epub 2005 Sep 30.

Band structure, phonon scattering, and the performance limit of single-walled carbon nanotube transistors.

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Laboratory of Atomic and Solid-State Physics, Cornell University, Ithaca, New York 14853, USA.


Semiconducting single-walled carbon nanotubes are studied in the diffusive transport regime. The peak mobility is found to scale with the square of the nanotube diameter and inversely with temperature. The maximum conductance, corrected for the contacts, is linear in the diameter and inverse temperature. These results are in good agreement with theoretical predictions for acoustic phonon scattering in combination with the unusual band structure of nanotubes. These measurements set the upper bound for the performance of nanotube transistors operating in the diffusive regime.

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