• 文献标题:   Adatoms and Anderson localization in graphene
  • 文献类型:   Article
  • 作  者:   GARCIA JH, UCHOA B, COVACI L, RAPPOPORT TG
  • 作者关键词:  
  • 出版物名称:   PHYSICAL REVIEW B
  • ISSN:   1098-0121 EI 1550-235X
  • 通讯作者地址:   Univ Fed Rio de Janeiro
  • 被引频次:   8
  • DOI:   10.1103/PhysRevB.90.085425
  • 出版年:   2014

▎ 摘  要

We address the nature of the disordered state that results from the adsorption of adatoms in graphene. For adatoms that sit at the center of the honeycomb plaquette, as in the case of most transition metals, we show that the ones that form a zero-energy resonant state lead to Anderson localization in the vicinity of the Dirac point. Among those, we show that there is a symmetry class of adatoms where Anderson localization is suppressed, leading to an exotic metallic state with large and rare charge droplets, that localizes only at the Dirac point. We identify the experimental conditions for the observation of the Anderson transition for adatoms in graphene.