• 文献标题:   Bandgap engineering in massive-massless graphene superlattices
  • 文献类型:   Article
  • 作  者:   GARCIACERVANTES H, LOPEZBECERRA A, RODRIGUEZGONZALEZ R, RODRIGUEZVARGAS I
  • 作者关键词:   bandgap engineering, massivemassless graphene superlattice, angledependent transmission
  • 出版物名称:   PHYSICA BCONDENSED MATTER
  • ISSN:   0921-4526 EI 1873-2135
  • 通讯作者地址:  
  • 被引频次:   1
  • DOI:   10.1016/j.physb.2022.414052 EA JUN 2022
  • 出版年:   2022

▎ 摘  要

Bandgap engineering in graphene has become a fervent subject of research due to its relevance in technological applications. In this work, we proposed massive-massless graphene superlattices (MMGSLs) to tune the angle dependent transmission properties. We have considered breaking symmetry substrates to generate massive and massless regions. We report an angular dependence of the transmission gaps and minibands as a function of the angle of incidence of the Dirac electrons in MMGSLs. Our results show that the transmission gaps and minibands have a trigonometric angular dependence based on the secant in the entire transmission energy range. In addition, the transmission gaps and minibands are well-defined at normal incidence, in contrast to gated graphene superlattices. These findings indicate that MMGSLs could be a possibility for bandgap engineering in graphene.