capital pi and capital pi + sigma plasmon localization in single-walled carbon nanotube meta-materials

We have investigated the plasmon excitations and interband transitions in nematic nanotube meta-materials with different nanotube mean diameters. While the characteristic optical low-energy transitions give testimony to the differing mean diameters, the full momentum resolved capital pi as well as c...

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Veröffentlicht in:Nanotechnology 2013-10, Vol.24 (40), p.405202-1-6
Hauptverfasser: Kramberger, C, Thurakitseree, T, Maruyama, S, Knupfer, M
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Sprache:eng
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Zusammenfassung:We have investigated the plasmon excitations and interband transitions in nematic nanotube meta-materials with different nanotube mean diameters. While the characteristic optical low-energy transitions give testimony to the differing mean diameters, the full momentum resolved capital pi as well as capital pi + sigma plasmon response of the meta-materials is found to be entirely invariant with the nanotube diameters 1 nm < d < 2 nm. We hence demonstrate that plasmons on single-walled carbon nanotubes are fully channeled to be one dimensional in the typical range of nanotube diameters. The internal morphology of the meta-material offers a knob to uniformly tune the plasmon resonances.
ISSN:0957-4484
DOI:10.1088/0957-4484/24/40/405202