Abstract
We have studied the binding energies and electronic structures of metal (Ti, Al, Au) chains adsorbed on single-wall carbon nanotubes (SWNT) using first-principles methods. Our calculations have shown that titanium is much more favored energetically over gold and aluminum to form a continuous chain on a variety of SWNT’s. The interaction between titanium and carbon nanotube significantly modifies the electronic structures around Fermi energy for both zigzag and armchair tubes. The delocalized electrons from the titanium chain generate additional states in the band-gap regions of the semiconducting tubes, transforming them into metals.
- Received 12 February 2002
DOI:https://doi.org/10.1103/PhysRevB.66.041403
©2002 American Physical Society