Terahertz conductivity peak in composite materials containing carbon nanotubes: Theory and interpretation of experiment

G. Ya Slepyan, M. V. Shuba, S. A. Maksimenko, C. Thomsen, A. Lakhtakia

Research output: Contribution to journalArticlepeer-review

Abstract

A model for the effective conductivity of a dilute and disordered composite material containing randomly single-wall carbon nanotube (SWCNT) inclusions was formulated. The modification of electron transport by the surface curvature of SWCNTs and an axial depolarization effect due to the finite length of metallic SWCNTs are taken into account. Simultaneous consideration of both effects permits the correct interpretation of the dependences of the effective conductivity on the frequency and temperature, and explains an experimentally observed terahertz peak in the spectrum of the effective conductivity.

Original languageEnglish
Article number205423
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume81
Issue number20
DOIs
StatePublished - 17 May 2010
Externally publishedYes

Funding

FundersFunder number
Seventh Framework Programme247007

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