Abstract
We investigate the electronic structure of the fullerenes encapsulated inside carbon nanotubes, the so-called nanopeapods, using the first-principles study. The orbital hybridization of (the state above the lowest unoccupied molecular orbital) of , rather than LUMO as previously proposed, with the nanotube states explains the peak at in recent scanning-tunneling-spectroscopy (STS) data. For the endohedral metallofullerenes nested in the strained nanotube, the charge transfer shifts the relative energy levels of the different states and produces a spatial modulation of the energy gap in agreement with another STS experiment.
- Received 12 October 2002
DOI:https://doi.org/10.1103/PhysRevLett.90.106402
©2003 American Physical Society