Advances in single nanotube spectroscopy: Raman spectra from
cross-polarized light and chirality dependence of Raman frequencies
CARBON, 42 (5-6):
1067-1069 (2004)Symposium on Advanced Multifunctional Nanocarbon Materials and
Nanosystems held at the 2003 EMRS Spring Meeting, Strasbourg, FRANCE,
JUN 10, 2002-JUN 13, 2003.DOI: 10.1016/j.carbon.2003.12.061
Abstract
This work discusses new results obtained from analysis of Raman signal
from isolated single wall carbon nanotubes. (1) Study of tangential (G
band) modes frequency dependence on tube diameter and lineshape
dependence on scattering polarization geometry shows clear observation
of symmetry selection rules at the single nanotube level. Observation of
E-2 phonon modes indicates Raman spectra coming from cross-polarized
light, i.e. from E-mu(v) --> E-mu+/-1(c) electronic transitions. (2)
Study of the disorder induced (D) band and other small intensity
features show strong dependence of Raman frequencies of nanotube chiral
angle. (C) 2004 Elsevier Ltd. All rights reserved.