| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1554285 | Superlattices and Microstructures | 2011 | 5 Pages |
Abstract
By numerical diagonalization of honeycomb-lattice tight-binding Hamiltonian we calculate the density of state (DOS) of irregularly shaped graphene quantum dots fabricated in the form of graphene nano-flakes. The finite-size electron confinement and the edge states result in the central peak of DOS that is located at the zero-energy Dirac point. The amplitude and width of the peak are provided by the form of the graphene cluster, but no regular correlation with its shape was found.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
T. Espinosa-Ortega, Igor A. Luk’yanchuk, Yuri G. Rubo,