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.

High-performance solution of the transport problem in a graphene armchair structure with a generic potential

LOGOTETA, DEMETRIO;MARCONCINI, PAOLO;BONATI, CLAUDIO;FAGOTTI, MAURIZIO;MACUCCI, MASSIMO
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.
Logoteta, Demetrio; Marconcini, Paolo; Bonati, Claudio; Fagotti, Maurizio; Macucci, Massimo
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11568/533101
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