Phonon-drag thermopower of ballistic semiconducting single-wall carbon nanotubes and comparison with the semiclassical result

Materials Science Department, University of Patras - Patras 26 504, Greece, EU

^a rtsaous@upatras.gr

Received: 29 October 2010
Accepted: 31 January 2011

Abstract

We theoretically investigate the phonon-drag thermopower, S^g, of semiconducting single-wall carbon nanotubes in the ballistic transport regime. Detailed derivations and numerical calculations for S^g as a function of temperature, tube radius and doping are presented. We find a striking similarity between the behavior of S^g in the ballistic regime and the one reported earlier in the diffusive transport regime.