• 文献标题:   Hierarchy of gaps and magnetic minibands in graphene in the presence of the Abrikosov vortex lattice
  • 文献类型:   Article
  • 作  者:   CHEN X, FAL KO VI
  • 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 Manchester
  • 被引频次:   3
  • DOI:   10.1103/PhysRevB.93.035427
  • 出版年:   2016

▎ 摘  要

We determine the bands and gaps in graphene subjected to the magnetic field of an Abrikosov lattice of vortices in the underlying superconducting film. The spectrum features one nondispersive magnetic miniband at zero energy, separated by the largest gaps in the miniband spectrum from a pair of minibands resembling a slightly broadened first Landau level in graphene, suggesting the persistence of nu = +/- 2 and +/- 6 quantum Hall effect states. Also, we identify an occasional merging point of magnetic minibands with a Dirac-type dispersion at the miniband edges.