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- Title
Electronic structures for armchair-edge graphene nanoribbons under a small uniaxial strain.
- Authors
Liao, W. H.; Zhou, B. H.; Wang, H. Y.; Zhou, G. H.
- 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.
- Subjects
GRAPHENE; ELECTRONIC structure; ELECTROMECHANICAL devices; SEMICONDUCTORS; ENGINEERING
- Publication
European Physical Journal B: Condensed Matter, 2010, Vol 76, Issue 3, p463
- ISSN
1434-6028
- Publication type
Article
- DOI
10.1140/epjb/e2010-00222-3