The energy spectrum and the optical absorption spectra of single-wall carbon nanotubes with chiralities (5,5), (10,0), (9,0), (12,0), and (15,0) is calculated within the framework of the Shubin–Wonsowskii–Hubbard model taking into account distant (adjacent to the nearest) interstitial electron transfer. It is demonstrated that all of them, irrespective of the chirality, are narrow-gap semiconductors with a gap of ~0.1 eV that coincides with the available experimental data. The optical absorption spectra are also in good agreement with the experimentally measured spectra.
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 7, pp. 62–69, July, 2013.
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Murzashev, A.I., Shadrin, E.O. Energy Spectrum and Optical Properties of Single-Wall Carbon Nanotubes. Russ Phys J 56, 791–800 (2013). https://doi.org/10.1007/s11182-013-0101-x
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DOI: https://doi.org/10.1007/s11182-013-0101-x