• 文献标题:   New Type of Vacancy-Induced Localized States in Multilayer Graphene
  • 文献类型:   Article
  • 作  者:   CASTRO EV, LOPEZSANCHO MP, VOZMEDIANO MAH
  • 作者关键词:  
  • 出版物名称:   PHYSICAL REVIEW LETTERS
  • ISSN:   0031-9007
  • 通讯作者地址:   CSIC
  • 被引频次:   39
  • DOI:   10.1103/PhysRevLett.104.036802
  • 出版年:   2010

▎ 摘  要

We demonstrate the existence of a new type of zero energy state associated with vacancies in multilayer graphene that has a finite amplitude over the layer with a vacancy and adjacent layers, and the peculiarity of being quasilocalized in the former and totally delocalized in the adjacent ones. In a bilayer, when a gap is induced in the system by applying a perpendicular electric field, these states become truly localized with a normalizable wave function. A transition from a localized to an extended state can be tuned by the external gate for experimentally accessible values of parameters.