Conductance of Graphene Nanoribbon Junctions and the Tight Binding Model

Yudong Wu, Peter Childs

Research output: Contribution to journalArticlepeer-review

33 Citations (Scopus)
166 Downloads (Pure)

Abstract

Planar carbon-based electronic devices, including metal/semiconductor junctions, transistors and interconnects, can now be formed from patterned sheets of graphene. Most simulations of charge transport within graphene-based electronic devices assume an energy band structure based on a nearest-neighbour tight binding analysis. In this paper, the energy band structure and conductance of graphene nanoribbons and metal/semiconductor junctions are obtained using a third nearest-neighbour tight binding analysis in conjunction with an efficient nonequilibrium Green’s function formalism. We find significant differences in both the energy band structure and conductance obtained with the two approximations.
Original languageEnglish
Article number62
JournalNanoscale Research Letters
Volume6
DOIs
Publication statusPublished - 7 Oct 2010

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