Excitonic effects on radial breathing mode intensity of single wall carbon nanotubes

Kentaro Sato; Riichiro Saito; Ahmad R.T. Nugraha; Shigeo Maruyama

doi:10.1016/j.cplett.2010.07.099

Excitonic effects on radial breathing mode intensity of single wall carbon nanotubes

Kentaro Sato, Riichiro Saito, Ahmad R.T. Nugraha, Shigeo Maruyama

SCI - Physics

Research output: Contribution to journal › Article › peer-review

25 Citations (Scopus)

Abstract

We develop exciton-photon and exciton-phonon interaction matrix elements for single wall carbon nanotubes within extended tight binding method. The exciton-photon matrix elements using the extended tight binding wave function have a large chirality dependence compared with the previous calculation by simple tight binding method. Using the exciton-photon and exciton-phonon matrix elements presented here, we calculate resonance Raman intensity for radial breathing mode as a function of diameter and chiral angle. Excitonic effect of resonance Raman intensities for the radial breathing mode is enhanced by the curvature and trigonal warping effects.

Original language	English
Pages (from-to)	94-98
Number of pages	5
Journal	Chemical Physics Letters
Volume	497
Issue number	1-3
DOIs	https://doi.org/10.1016/j.cplett.2010.07.099
Publication status	Published - 2010 Sep 10

ASJC Scopus subject areas

Physics and Astronomy(all)
Physical and Theoretical Chemistry

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abstract = "We develop exciton-photon and exciton-phonon interaction matrix elements for single wall carbon nanotubes within extended tight binding method. The exciton-photon matrix elements using the extended tight binding wave function have a large chirality dependence compared with the previous calculation by simple tight binding method. Using the exciton-photon and exciton-phonon matrix elements presented here, we calculate resonance Raman intensity for radial breathing mode as a function of diameter and chiral angle. Excitonic effect of resonance Raman intensities for the radial breathing mode is enhanced by the curvature and trigonal warping effects.",

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AU - Sato, Kentaro

AU - Saito, Riichiro

AU - Nugraha, Ahmad R.T.

AU - Maruyama, Shigeo

PY - 2010/9/10

Y1 - 2010/9/10

N2 - We develop exciton-photon and exciton-phonon interaction matrix elements for single wall carbon nanotubes within extended tight binding method. The exciton-photon matrix elements using the extended tight binding wave function have a large chirality dependence compared with the previous calculation by simple tight binding method. Using the exciton-photon and exciton-phonon matrix elements presented here, we calculate resonance Raman intensity for radial breathing mode as a function of diameter and chiral angle. Excitonic effect of resonance Raman intensities for the radial breathing mode is enhanced by the curvature and trigonal warping effects.

AB - We develop exciton-photon and exciton-phonon interaction matrix elements for single wall carbon nanotubes within extended tight binding method. The exciton-photon matrix elements using the extended tight binding wave function have a large chirality dependence compared with the previous calculation by simple tight binding method. Using the exciton-photon and exciton-phonon matrix elements presented here, we calculate resonance Raman intensity for radial breathing mode as a function of diameter and chiral angle. Excitonic effect of resonance Raman intensities for the radial breathing mode is enhanced by the curvature and trigonal warping effects.

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