• 文献标题:   Attraction-repulsion transition in the interaction of adatoms and vacancies in graphene
  • 文献类型:   Article
  • 作  者:   LEBOHEC S, TALBOT J, MISHCHENKO EG
  • 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 Utah
  • 被引频次:   14
  • DOI:   10.1103/PhysRevB.89.045433
  • 出版年:   2014

▎ 摘  要

The interaction of two resonant impurities in graphene has been predicted to have a long-range character with weaker repulsion when the two adatoms reside on the same sublattice and stronger attraction when they are on different sublattices. We reveal that this attraction results from a single energy level. This opens up a possibility of controlling the sign of the impurity interaction via the adjustment of the chemical potential. For many randomly distributed impurities (adatoms or vacancies) this may offer a way to achieve a controlled transition from aggregation to dispersion.