We propose an efficient numerical method to study the transport properties of armchair graphene ribbons in the presence of a generic external potential. The method is based on a continuum envelope-function description with physical boundary conditions. The envelope functions are computed in the reciprocal space, and the transmission is then obtained with a recursive scattering matrix approach. This allows a significant reduction of the computational time with respect to finite difference simulations.
Autori interni: | ||
Autori: | Demetrio Logoteta;Paolo Marconcini;Claudio Bonati;Maurizio Fagotti;Massimo Macucci | |
Titolo: | High-performance solution of the transport problem in a graphene armchair structure with a generic potential | |
Anno del prodotto: | 2014 | |
Abstract: | We propose an efficient numerical method to study the transport properties of armchair graphene ribbons in the presence of a generic external potential. The method is based on a continuum envelope-function description with physical boundary conditions. The envelope functions are computed in the reciprocal space, and the transmission is then obtained with a recursive scattering matrix approach. This allows a significant reduction of the computational time with respect to finite difference simulations. | |
Digital Object Identifier (DOI): | 10.1103/PhysRevE.89.063309 | |
Appare nelle tipologie: | 1.1 Articolo in rivista |
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