Analytical tight-binding calculations for optical absorption in single wall carbon nanotubes

TitleAnalytical tight-binding calculations for optical absorption in single wall carbon nanotubes
Publication TypeArticolo su Rivista peer-reviewed
Year of Publication2004
AuthorsBuonocore, F., Vinciguerra V., and Coffa S.
JournalPhysica Status Solidi (B) Basic Research
Volume241
Pagination2599-2606
ISSN03701972
Abstract

We present our calculations of the optical absorption for dipole direct transitions in the tight binding zone folding scheme for single wall carbon nanotubes. We have applied the Fermi's golden rule by calculating the electric dipole matrix element and we provide an analytical expression for it. We have calculated the optical absorption of semiconducting zig-zag SWNTs equally distributed and with gaussian distribution of the diameters, where collisional broadening of the density of states was taken into account. The calculated behavior is in agreement with optical density measurements for SWNTs. Our analytical calculations will be useful for the analysis of the optical emission and absorption from single wall carbon nanotubes. © 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

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URLhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-4644260349&doi=10.1002%2fpssb.200402049&partnerID=40&md5=dcd94e88d2468438f4f4239085b5828e
DOI10.1002/pssb.200402049