• 文献标题:   Graphene in a strong magnetic field: Massless Dirac particles versus skyrmions
  • 文献类型:   Article
  • 作  者:   SCHLIEMANN J
  • 作者关键词:   carbon, fermion system, landau level, manybody problem, nanostructured material, quantum hall effect, skyrmion
  • 出版物名称:   PHYSICAL REVIEW B
  • ISSN:   1098-0121
  • 通讯作者地址:   Univ Regensburg
  • 被引频次:   5
  • DOI:   10.1103/PhysRevB.78.195426
  • 出版年:   2008

▎ 摘  要

We discuss models for massless Dirac fermions being subjected to a perpendicular magnetic field in spherical geometry. These models are analogs of Haldane's spherical construction for massful charge carriers. The single-particle states constructed here are easily implemented in existing numerical code for many-body problems in conventional quantum Hall systems. Moreover, the many-body states of fully filled sublevels in the subspace of lowest Landau-level index are skyrmions with respect to the layer spin.