%0 Journal Article
%T Effects of Strain on Notched Zigzag Graphene Nanoribbons
%A Jack Baldwin
%A Y. Hancock
%J Crystals
%D 2013
%I MDPI AG
%R 10.3390/cryst3010038
%X The combined effects of an asymmetric (square or V-shaped) notch and uniaxial strain are studied in a zigzag graphene nanoribbon (ZGNR) device using a generalized tight-binding model. The spin-polarization and conductance-gap properties, calculated within the Landauer¨CBĄ§uttiker formalism, were found to be tunable for uniaxial strain along the ribbon-length and ribbon-width for an ideal ZGNR and square (V-shaped) notched ZGNR systems. Uniaxial strain along the ribbon-width for strains 10% initiated significant notch-dependent reductions to the conduction-gap. For the V-shaped notch, such strains also induced spin-dependent changes that result, at 20% strain, in a semi-conductive state and metallic state for each respective spin-type, thus demonstrating possible quantum mechanisms for spin-filtration.
%K graphene nanoribbons
%K Hubbard model
%K spin-transport
%K itinerant magnetism
%K strain effects
%K nanotechnology
%U http://www.mdpi.com/2073-4352/3/1/38