Resonance Raman Scattering in Carbon Nanotubes and Nanographites

Abstract

In this work, we discuss the resonant Raman process in nanographites and carbon nanotubes, relating the most important Raman features to a first‐order (single resonance) or a second‐order (double resonance) process. We also show that, in the case of 1D systems, the term “resonance” has a more strict meaning and occurs when the energy of the photon does not simply coincide with the energy of a possible electron‐hole pair, but rather matches the separation between van Hove singularities in the valence and conduction bands.