The anomalous dispersion of the disorder-induced and the second-order Raman Bands in Carbon Nanotubes
AUTOR(ES)
Pimenta, M. A., Hanlon, E. B., Marucci, A., Corio, P., Brown, S. D. M., Empedocles, S. A., Bawendi, M. G., Dresselhaus, G., Dresselhaus, M. S.
FONTE
Brazilian Journal of Physics
DATA DE PUBLICAÇÃO
2000-06
RESUMO
In this work we have studied the dispersion of the disorder-induced (D) and the second-order (G') Raman bands in single wall carbon nanotubes using several laser excitation energies (E laser) in the range 1.5-3.0 eV. An anomalous step-like behavior was observed in the E laser dependence of the G'-band frequency. This result is interpreted as a manifestation of the one-dimensional (1D) behavior of the phonon spectrum in carbon nanotubes.
