• 文献标题:   Artificial atoms in interacting graphene quantum dots
  • 文献类型:   Article
  • 作  者:   HAUSLER W, EGGER R
  • 作者关键词:  
  • 出版物名称:   PHYSICAL REVIEW B
  • ISSN:   2469-9950 EI 2469-9969
  • 通讯作者地址:   Univ Dusseldorf
  • 被引频次:   24
  • DOI:   10.1103/PhysRevB.80.161402
  • 出版年:   2009

▎ 摘  要

We describe the theory of few Coulomb-correlated electrons in a magnetic quantum dot formed in graphene. While the corresponding nonrelativistic (Schrodinger) problem is well understood, a naive generalization to graphene's "relativistic" (Dirac-Weyl) spectrum encounters divergencies and is ill defined. We employ Sucher's projection formalism to overcome these problems. Exact diagonalization results for the two-electron quantum dot, i.e., the artificial helium atom in graphene, are presented.