Abstract
The existence of low angular momentum image-potential states is predicted both for single- and multiwalled nanotubes. The states are confined between the self-induced potential on the vacuum side and the surface barrier, created by the central ascent in the transverse nanotube potential. Effective interactions near the surface of the nanotube are modeled with a cylindrical jelliumlike surface barrier, parameterized to ensure the correct transition into the long-range image potential. Binding energies and wave functions are calculated for (12,0), (10,10), (9,0) single-walled and multiwalled nanotubes for different values of electron angular momenta. In addition, the expected relative lifetimes were calculated for the case of zero–angular momentum states of a (10,10) SWNT. The possible formation of image-potential states in nanotube bundles is briefly discussed.
1 More- Received 8 October 2003
DOI:https://doi.org/10.1103/PhysRevB.70.115419
©2004 American Physical Society