@ARTICLE{pssb2008_2,
  author = {Koltai, J and Zólyomi, V and Kürti, J},
  title = {Phonon dispersion of small diameter semiconducting chiral carbon
	nanotubes - a theoretical study},
  journal = {physica status solidi b},
  year = {2008},
  volume = {245},
  pages = {2137-2140},
  number = {10},
  abstract = { We present first principles calculations on the phonon dispersion
	of a large number of small diameter chiral single walled carbon nanotubes.
	The use of density functional theory for unit cells containing hundreds
	of atoms was only possible because the helical symmetry was taken
	into account explicitly in our frequency calculations.The results
	can be useful for interpretation of experiments, especially on CoMoCat
	tubes, but also on HiPCo tubes and the inner walls of double walled
	carbon nanotubes. The phonon dispersions of several larger diameter
	tubes have also been calculated for comparison. A clear phonon softening
	with decreasing diameter has been observed for the D and D*-bands.
	(c) 2008 WILEY-VCH Verlag GmbH \& Co. KGaA, Weinheim.},
  doi = {10.1002/pssb.200879646},
  issn = {0370-1972},
  keywords = {DFT ; Phonon ; Chiral ; SWCNT},
  mount = {Oct},
  url = {http://www3.interscience.wiley.com/journal/121392645/abstract}
}