Modulation of Thermoelectric Power of Individual Carbon Nanotubes

Details Modulation of Thermoelectric Power of Individual Carbon Nanotubes Modulation of Thermoelectric Power of Individual Carbon Nanotubes

2003-10-21

arxiv.org/abs/cond-mat/0310507v1

Phys. Rev. Lett. 91, 256801 (2003)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

to be published in Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.91.256801

Thermoelectric power (TEP) of individual single walled carbon nanotubes (SWNTs) has been measured at mesoscopic scales using a microfabricated heater and thermometers. Gate electric field dependent TEP-modulation has been observed. The measured TEP of SWNTs is well correlated to the electrical conductance across the SWNT according to the Mott formula. At low temperatures, strong modulations of TEP were observed in the single electron conduction limit. In addition, semiconducting SWNTs exhibit large values of TEP due to the Schottky barriers at SWNT-metal junctions.

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