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Electronic structures for armchair-edge graphene nanoribbons under a small uniaxial strain

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  • W. H. Liao
  • B. H. Zhou
  • H. Y. Wang
  • G. H. Zhou

Abstract

We theoretically investigate the electronic structures for armchair-edge graphene nanoribbons (AGNRs) under a small in-plane uniaxial strain along armchair (longitudinal) and zigzag (transversal) direction, respectively. We demonstrate that, by both the tight-binding calculation and first-principles study, the applying of a small asymmetrical strain results in variation of energy subband spacing, which opens a band gap for metallic AGNRs and modifies the band gaps for semiconducting AGNRs near the Fermi level. It is believed that these results are of importance in the band gap engineering and electromechanical applications of graphene-nanoribbon-based devices. Copyright EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2010

Suggested Citation

  • W. H. Liao & B. H. Zhou & H. Y. Wang & G. H. Zhou, 2010. "Electronic structures for armchair-edge graphene nanoribbons under a small uniaxial strain," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 76(3), pages 463-467, August.
    • Handle: RePEc:spr:eurphb:v:76:y:2010:i:3:p:463-467
    DOI: 10.1140/epjb/e2010-00222-3
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