TY - JOUR
T1 - Excitonic effects on radial breathing mode intensity of single wall carbon nanotubes
AU - Sato, Kentaro
AU - Saito, Riichiro
AU - Nugraha, Ahmad R.T.
AU - Maruyama, Shigeo
N1 - Funding Information:
K.S. is supported by a JSPS research grant (No. 20-4594 ). R.S. acknowledges Professor A. Jorio, Mr. P.B.C. Pesce, and Professor M.S. Dresselhaus for variable discussion and support from MEXT grants (No. 20241023 ). S.M. acknowledges part of this work was financially supported by Grants-in-Aid for Scientific Research ( 19054003 and 22246023 ) from the Japan Society for the Promotion of Science, SCOPE ( 051403009 ) from the Ministry of Internal Affairs and Communications, and ‘Development of Nanoelectronic Device Technology’ of NEDO .
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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U2 - 10.1016/j.cplett.2010.07.099
DO - 10.1016/j.cplett.2010.07.099
M3 - Article
AN - SCOPUS:77957561582
VL - 497
SP - 94
EP - 98
JO - Chemical Physics Letters
JF - Chemical Physics Letters
SN - 0009-2614
IS - 1-3
ER -