Abstract
We show that D-mode Raman scattering in single-walled carbon nanotubes is due to a double-resonant Raman process. The unusual shift of the D-mode frequency with excitation energy is even expected for a single nanotube. The magnitude of the shift and the D-mode frequency depend strongly on the tube’s diameter and chirality. Only tubes with integer contribute to the D-mode spectrum because of the particular electronic structure of carbon nanotubes.
- Received 16 June 2001
DOI:https://doi.org/10.1103/PhysRevB.64.121407
©2001 American Physical Society