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Type: 
Journal
Description: 
We calculate quantum transport for metal-graphene nanoribbon heterojunctions within the atomistic self-consistent Schrödinger/Poisson scheme. Attention is paid on both the chemical aspects of the interface bonding as well the one-dimensional electrostatics along the ribbon length. Band-bending and doping effects strongly influence the transport properties, giving rise to conductance asymmetries and a selective suppression of the subband formation. Junction electrostatics and p-type characteristics drive the conduction mechanism in the case of high-work-function Au, Pd, and Pt electrodes while contact resistance becomes dominant in the case of Al.
Publisher: 
American Physical Society
Publication date: 
20 Oct 2010
Authors: 

I Deretzis, Gianluca Fiori, Giuseppe Iannaccone, A La Magna

Biblio References: 
Volume: 82 Issue: 16 Pages: 161413
Origin: 
Physical Review B