• 文献标题:   Gap opening in graphene by shear strain
  • 文献类型:   Article
  • 作  者:   COCCO G, CADELANO E, COLOMBO L
  • 作者关键词:  
  • 出版物名称:   PHYSICAL REVIEW B
  • ISSN:   1098-0121
  • 通讯作者地址:   Univ Cagliari
  • 被引频次:   185
  • DOI:   10.1103/PhysRevB.81.241412
  • 出版年:   2010

▎ 摘  要

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.