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Theoretical Raman intensity of the radial breathing mode of single‐walled carbon nanotubes
Author(s) -
Popov V. N.,
Lambin P.
Publication year - 2007
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200776176
Subject(s) - carbon nanotube , raman spectroscopy , phonon , materials science , intensity (physics) , molecular physics , symmetry (geometry) , mechanical properties of carbon nanotubes , lattice (music) , optical properties of carbon nanotubes , condensed matter physics , nanotechnology , atomic physics , nanotube , chemistry , physics , optics , geometry , mathematics , acoustics
The atomistic calculations of the physical properties of perfect single‐walled carbon nanotubes can be performed successfully by use of the helical symmetry of the nanotubes. The efficiency of this approach is illustrated by calculations of the electronic band structure, lattice dynamics, and the resonant Raman intensity of the radial‐breathing mode for all nanotubes in the diameter range from 0.6 nm to 2.4 nm within a symmetry‐adapted nonorthogonal tight‐binding model. It is shown that the derived electron–phonon coupling and the Raman intensity are in fair agreement with recent Raman data on individual nanotubes. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)