Diffusive thermoelectric transport in carbon nanotubes

Authors

Louella Judy Vasquez; Cristine Villagonzalo

Source

Proceedings of the 22nd Samahang Pisika ng Pilipinas Physics Congress, Bohol Tropics Resort, Tagbilaran City, 25–27 Oct 2004, 119.

Abstract

This paper aims to study the diffusion thermoelectric power of singe-walled carbon nanotubes (SWNTs). This was obtained using a linear response method and a semiclassical treatment of metallic-like systems. The energy and the density of states were generated using the tight binding model for both electrons and holes. The SWNT, exhibiting a diffusive transport, is shown to have a negative thermoelectric power for an energy-dependent relaxation time. This indicates that electrons are dominant and demonstrates a metallic-like behavior.