nn900614x_si_001.pdf (181 kB)
Download fileSpin Polarized Conductance in Hybrid Graphene Nanoribbons Using 5−7 Defects
journal contribution
posted on 2009-11-24, 00:00 authored by Andrés R. Botello-Méndez, Eduardo Cruz-Silva, Florentino López-Urías, Bobby G. Sumpter, Vincent Meunier, Mauricio Terrones, Humberto TerronesWe present a class of intramolecular graphene heterojunctions and use first-principles density functional calculations to describe their electronic, magnetic, and transport properties. The hybrid graphene and hybrid graphene nanoribbons have both armchair and zigzag features that are separated by an interface made up of pentagonal and heptagonal carbon rings. Contrary to conventional graphene sheets, the computed electronic density of states indicates that all hybrid graphene and nanoribbon systems are metallic. Hybrid nanoribbons are found to exhibit a remarkable width-dependent magnetic behavior and behave as spin polarized conductors.