Academic Journals Database
Disseminating quality controlled scientific knowledge

Electronic states and optical transitions in a graphene quantum dot in a normal magnetic field

Author(s): Grujić Marko | Tadić Milan

Journal: Serbian Journal of Electrical Engineering
ISSN 1451-4869

Volume: 8;
Issue: 1;
Start page: 53;
Date: 2011;
VIEW PDF   PDF DOWNLOAD PDF   Download PDF Original page

Keywords: graphene | circular | quantum dot

An analytical approach using the Dirac-Weyl equation is implemented to obtain the energy spectrum and optical absorption of a circular graphene quantum dot in the presence of an external magnetic field. The results are obtained for the infinite-mass and zigzag boundary conditions. We found that the energy spectra of a dot with zigzag boundary condition exhibit a zero energy band regardless of the value of the magnetic field, while for the infinite mass boundary conditions, the zero energy states appear only for high magnetic fields.
Affiliate Program      Why do you need a reservation system?