“School of Nano-Sciences”
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| Paper IPM / Nano-Sciences / 11679 |
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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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