Modulation of Thermoelectric Power of Individual Carbon Nanotubes
Abstract
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. 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.
- Publication:
-
Physical Review Letters
- Pub Date:
- December 2003
- DOI:
- arXiv:
- arXiv:cond-mat/0310507
- Bibcode:
- 2003PhRvL..91y6801S
- Keywords:
-
- 73.63.-b;
- 65.80.+n;
- 73.22.-f;
- Electronic transport in nanoscale materials and structures;
- Thermal properties of small particles nanocrystals and nanotubes;
- Electronic structure of nanoscale materials: clusters nanoparticles nanotubes and nanocrystals;
- Condensed Matter - Mesoscale and Nanoscale Physics
- E-Print:
- to be published in Phys. Rev. Lett