Gap opening in graphene by shear strain

Details Gap opening in graphene by shear strain Gap opening in graphene by shear strain

2010-06-10

arxiv.org/abs/1006.1999v1

Phys. Rev. B 81, 241412(R) (2010)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

to appear on PRB - Rapid Communication

Scientific paper

10.1103/PhysRevB.81.241412

We exploit the concept of strain-induced band structure engineering in graphene through the calculation of its electronic properties under uniaxial, shear, and combined uniaxial-shear deformations. We show that by combining shear deformations to uniaxial strains it is possible modulate the graphene energy gap value from zero up to $0.9$ eV. Interestingly enough, the use of a shear component allows for a gap opening at moderate absolute deformation, safely smaller than the graphene failure strain.

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