Abstract
We report atomic resolution -contrast scanning transmission electron microscopy images that reveal the incorporation of I atoms in the form of helical chains inside single-walled carbon nanotubes. Density functional calculations and topological considerations provide a consistent interpretation of the experimental data. Charge transfer between the nanotube walls and the I chains is associated with the intercalation.
- Received 9 November 1999
DOI:https://doi.org/10.1103/PhysRevLett.84.4621
©2000 American Physical Society