• 文献标题:   Localized magnetic states in graphene
  • 文献类型:   Article
  • 作  者:   UCHOA B, KOTOV VN, PERES NMR, NETO AHC
  • 作者关键词:  
  • 出版物名称:   PHYSICAL REVIEW LETTERS
  • ISSN:   0031-9007 EI 1079-7114
  • 通讯作者地址:   Boston Univ
  • 被引频次:   196
  • DOI:   10.1103/PhysRevLett.101.026805
  • 出版年:   2008

▎ 摘  要

We examine the conditions necessary for the presence of localized magnetic moments on adatoms with inner shell electrons in graphene. We show that the low density of states at the Dirac point, and the anomalous broadening of the adatom electronic level, lead to the formation of magnetic moments for arbitrarily small local charging energy. As a result, we obtain an anomalous scaling of the boundary separating magnetic and nonmagnetic states. We show that, unlike any other material, the formation of magnetic moments can be controlled by an electric field effect.