Thermopower and resistivity of carbon nanotube networks and organic conducting polymers

S. A. Rogers, Alan B. Kaiser

Research output: Contribution to journalArticlepeer-review

Abstract

The resistivities for carbon nanotube networks and highly conducting polymers show similar behaviour, which we ascribe to metallic conduction interrupted by barriers, but the thermopower of the two types of material is very different. The almost linear temperature dependence of the thermopower of highly conducting polymers indicates that the electron-phonon interaction is too small to produce significant superconductivity. For carbon nanotubes, we identify systematic nonlinearities in the thermopower data and compare them with calculations of thermopower due to sharp peaks in the density of states and to low-temperature enhancement effects.

Original languageEnglish (US)
Pages (from-to)407-410
Number of pages4
JournalCurrent Applied Physics
Volume4
Issue number2-4
DOIs
StatePublished - Apr 2004
Externally publishedYes

Keywords

  • Carbon nanotubes
  • Conducting polymers
  • Conductivity
  • Thermopower

ASJC Scopus subject areas

  • Materials Science(all)
  • Physics and Astronomy(all)

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