Next Article in Journal / Special Issue
Indirect Exchange and Ruderman–Kittel–Kasuya–Yosida (RKKY) Interactions in Magnetically-Doped Graphene
Previous Article in Journal / Special Issue
Thermostability, Photoluminescence, and Electrical Properties of Reduced Graphene Oxide–Carbon Nanotube Hybrid Materials
Article Menu

Export Article

Open AccessArticle
Crystals 2013, 3(1), 38-48; doi:10.3390/cryst3010038

Effects of Strain on Notched Zigzag Graphene Nanoribbons

Department of Physics, The University of York, Heslington, York, YO10 5DD, UK
*
Author to whom correspondence should be addressed.
Received: 19 November 2012 / Revised: 28 December 2012 / Accepted: 9 January 2013 / Published: 23 January 2013
(This article belongs to the Special Issue Graphenes)
View Full-Text   |   Download PDF [519 KB, uploaded 23 January 2013]   |  

Abstract

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–B¨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. View Full-Text
Keywords: graphene nanoribbons; Hubbard model; spin-transport; itinerant magnetism; strain effects; nanotechnology graphene nanoribbons; Hubbard model; spin-transport; itinerant magnetism; strain effects; nanotechnology
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

Share & Cite This Article

MDPI and ACS Style

Baldwin, J.; Hancock, Y. Effects of Strain on Notched Zigzag Graphene Nanoribbons. Crystals 2013, 3, 38-48.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Crystals EISSN 2073-4352 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top