Nano Research

, Volume 3, Issue 8, pp 545–556

Strain effects in graphene and graphene nanoribbons: The underlying mechanism

Open Access
Research Article

DOI: 10.1007/s12274-010-0015-7

Cite this article as:
Li, Y., Jiang, X., Liu, Z. et al. Nano Res. (2010) 3: 545. doi:10.1007/s12274-010-0015-7

Abstract

A tight-binding analytic framework is combined with first-principles calculations to reveal the mechanism underlying the strain effects on electronic structures of graphene and graphene nanoribbons (GNRs). It provides a unified and precise formulation of the strain effects under various circumstances-including the shift of the Fermi (Dirac) points, the change in band gap of armchair GNRs with uniaxial strain in a zigzag pattern and its insensitivity to shear strain, and the variation of the k-range of edge states in zigzag GNRs under uniaxial and shear strains which determine the gap behavior via the spin polarization interaction.

Keywords

Graphene graphene nanoribbons (GNRs) band gap strain first-principles calculations tight-binding model 
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Copyright information

© Tsinghua University Press and Springer-Verlag Berlin Heidelberg 2010

Authors and Affiliations

  • Yang Li
    • 1
    • 2
  • Xiaowei Jiang
    • 1
    • 2
  • Zhongfan Liu
    • 1
  • Zhirong Liu
    • 1
  1. 1.College of Chemistry and Molecular Engineering, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, and Beijing National Laboratory for Molecular SciencesPeking UniversityBeijingChina
  2. 2.School of PhysicsPeking UniversityBeijingChina

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