1212.4727 (Jan Laudenbach et al.)

Resonance behavior of the defect-induced Raman mode of single-chirality
enriched carbon nanotubes    [PDF]

Jan Laudenbach, Frank Hennrich, Hagen Telg, Manfred Kappes, Janina Maultzsch

We present a resonance Raman study of the disorder-induced D mode in a sample highly enriched with semiconducting (9,7) single-walled carbon nanotubes in the excitation energy range of 1.49 - 2.05 eV. The intensity of the D mode shows a resonance behavior near the optical transition of the (9,7) tube. The well-known dispersion of the D-mode frequency, on the other hand, is not observed at the resonance, but only above a certain excitation energy. We explain our results by numerical simulations of the D-mode spectra.

View original: http://arxiv.org/abs/1212.4727