Abstract
We measured the complex dielectric constant in mats of single-wall carbon nanotubes between 2.7 K and 300 K up to 0.5 THz. The data are well understood in a Drude approach with a negligible temperature dependence of the plasma frequency and scattering time with an additional contribution of localized charges. The dielectric properties resemble those of the best “metallic” polypyrroles and polyanilines. The absence of metallic islands makes the mats a relevant piece in the puzzle of the interpretation of and in these polymers.
- Received 15 November 1999
DOI:https://doi.org/10.1103/PhysRevB.61.R5129
©2000 American Physical Society