• 文献标题:   Localization of Dirac Electrons in Rotated Graphene Bilayers
  • 文献类型:   Article
  • 作  者:   DE LAISSARDIERE GT, MAYOU D, MAGAUD L
  • 作者关键词:   graphene, graphite, moire pattern, electron localization, ab initio, tight binding
  • 出版物名称:   NANO LETTERS
  • ISSN:   1530-6984 EI 1530-6992
  • 通讯作者地址:   Univ Cergy Pontoise
  • 被引频次:   290
  • DOI:   10.1021/nl902948m
  • 出版年:   2010

▎ 摘  要

For Dirac electrons the Klein paradox implies that the confinement is difficult to achieve with an electrostatic potential although it can be of great importance for graphene-based devices. Here, ab initio and tight-binding approaches are combined and show that the wave function of Dirac electrons can be localized in rotated graphene bilayers due to the Moire pattern. This localization of wave function is maximum in the limit of the small rotation angle between the two layers.