Modeling charge transport in graphene nanoribbons and carbon nanotubes using a Schrodinger-Poisson solver

DI Odili, Y Wu, Peter Childs, D Herbert

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Interest in carbon-based electronics has been stimulated in recent years, initially through the discovery of carbon nanotubes, but recently with the formation of graphene layers. In this paper metal-oxide-semiconductor (MOS) systems based on these carbon structures are used to model and compare charge transport within them. Schrodinger's equation is solved self-consistently with Poisson's equation, using the scattering matrix method. A tight-binding model is used to determine the energy band structure in graphene. The current-voltage characteristics of MOS devices based on graphene and those based on carbon nanotubes demonstrate significant differences associated with their respective transmission probabilities. (C) 2009 American Institute of Physics. [DOI: 10.1063/1.3174430]
Original languageEnglish
Pages (from-to)024509
Number of pages1
JournalJournal of Applied Physics
Volume106
Issue number2
DOIs
Publication statusPublished - 1 Jul 2009

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