The European Physical Journal B

, Volume 76, Issue 3, pp 463–467

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

Mesoscopic and Nanoscale Systems

DOI: 10.1140/epjb/e2010-00222-3

Cite this article as:
Liao, W., Zhou, B., Wang, H. et al. Eur. Phys. J. B (2010) 76: 463. doi:10.1140/epjb/e2010-00222-3


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 information

© EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2010

Authors and Affiliations

  • W. H. Liao
    • 1
  • B. H. Zhou
    • 1
  • H. Y. Wang
    • 1
  • G. H. Zhou
    • 1
    • 2
  1. 1.Department of Physics and Key Laboratory for Low-Dimensional Structures and Quantum Manipulation (Ministry of Education)Hunan Normal UniversityChangshaP.R. China
  2. 2.International Center for Materials Physics, Chinese Academy of SciencesShenyangP.R. China

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