• 文献标题:   Screening of a hypercritical charge in graphene
  • 文献类型:   Article
  • 作  者:   FOGLER MM, NOVIKOV DS, SHKLOVSKII BI
  • 作者关键词:  
  • 出版物名称:   PHYSICAL REVIEW B
  • ISSN:   1098-0121
  • 通讯作者地址:   Univ Calif San Diego
  • 被引频次:   109
  • DOI:   10.1103/PhysRevB.76.233402
  • 出版年:   2007

▎ 摘  要

Screening of a large external charge in graphene is studied. The charge is assumed to be displaced away or smeared over a finite region of the graphene plane. The initial decay of the screened potential with distance is shown to follow the 3/2 power. It gradually changes to the Coulomb law outside of a hypercritical core whose radius is proportional to the external charge.