Tuning of energy levels and optical properties of graphene quantum dots - Condensed Matter > Mesoscale and Nanoscale PhysicsReportar como inadecuado




Tuning of energy levels and optical properties of graphene quantum dots - Condensed Matter > Mesoscale and Nanoscale Physics - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

Abstract: We investigate theoretically the magnetic levels and optical properties ofzigzag- and armchair-edged hexagonal graphene quantum dots GQDs utilizing thetight-binding method. A new bound edge state at zero energy appears for thezigzag GQDs in the absence of a magnetic field. The magnetic levels of GQDsexhibit a Hofstadter-butterfly spectrum and approach the Landau levels oftwo-dimensional graphene as the magnetic field increases. The opticalproperties are tuned by the size, the type of the edge, and the externalmagnetic field.



Autor: Z. Z. Zhang, Kai Chang, F. M. Peeters

Fuente: https://arxiv.org/



DESCARGAR PDF




Documentos relacionados