| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1496924 | Optical Materials | 2006 | 6 Pages |
Abstract
The electronic and magnetic properties of graphene sheets with armchair and zig-zag edges are investigated using the Hückel tight binding model in conjunction with the London approximation. It is observed that in the presence of a perpendicular external magnetic field, the nanographenes show a diamagnetic behavior exhibiting counter-clockwise ring currents. Topological defects such as vacancies, Stone-Wale transformations (bond rotations) and holes are introduced in the graphene sheets in order to enhance local paramagnetic ring currents. These ring currents produce a local magnetic moment perpendicular to the defective site. In addition, current flows in finite carbon nanotubes are investigated.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
F. López-Urías, J.A. Rodríguez-Manzo, E. Muñoz-Sandoval, M. Terrones, H. Terrones,