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Optical and loss spectra of carbon nanotubes: Depolarization effects and intertube interactions

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  • Optical and loss spectra of carbon nanotubes: Depolarization effects and intertube interactions
Author
A-G Marinopoulos
Lucia Reining
Angel Rubio
N Vast
Keywords
paper
Abstract

We performed ab initio calculations of the anisotropic dielectric response of small-diameter single-walled carbon nanotubes in the framework of time-dependent density-functional theory. The calculated optical spectra are in very good agreement with experiment, both concerning absolute peak positions and anisotropy effects. The latter can only be described correctly when crystal local-field effects (\textquoteright\textquoterightdepolarization\textquoteright\textquoteright effects) are fully taken into account. Moreover, interactions between the tubes can strongly modify their absorption and electron energy-loss spectra.

Year of Publication
2003
Journal
Phys. Rev. Lett.
Volume
91
Date Published
JUL 25
URL
http://dx.doi.org/10.1103/PhysRevLett.91.046402
DOI
10.1103/PhysRevLett.91.046402
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