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Paper   IPM / Nano-Sciences / 11679
School of Nano Science
  Title:   Comment on "Band structure engineering of graphene by strain: First-principles calculations"
1.  Mani Farjam
2.  Hashem Rafii Tabar
  Status:   Published
  Journal: Phys. Rev. B
  No.:  16
  Vol.:  80
  Year:  2009
  Pages:   3
  Publisher(s):   The American Physical Society
  Supported by:  IPM
In their first-principles calculations of the electronic band structure of graphene under uniaxial strain, Gui, Li and Zhong Phys. Rev. B 78 075435 (2008) have found opening of band gaps at the Fermi level. This finding is in conflict with the tight-binding description of graphene which is closed gap for small strains. In this Comment, we present first-principles calculations which refute the claim that strain opens band gaps in graphene.

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