Abstract
We show that the Raman scattering technique can give complete structural information for one-dimensional systems, such as carbon nanotubes. Resonant confocal micro-Raman spectroscopy of an individual single-wall nanotube makes it possible to assign its chirality uniquely by measuring one radial breathing mode frequency and using the theory of resonant transitions. A unique chirality assignment can be made for both metallic and semiconducting nanotubes of diameter , using the parameters and . For example, the strong RBM intensity observed at for 785 nm laser excitation is assigned to the metallic chiral nanotube on a surface.
- Received 14 August 2000
DOI:https://doi.org/10.1103/PhysRevLett.86.1118
©2001 American Physical Society