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

doi:10.1103/PhysRevB.81.205423

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

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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 language	English (US)
Article number	205423
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	81
Issue number	20
DOIs	https://doi.org/10.1103/PhysRevB.81.205423
State	Published - May 17 2010

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.81.205423

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AU - Thomsen, C.

AU - Lakhtakia, A.

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AB - 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.

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

Abstract

All Science Journal Classification (ASJC) codes

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