• 文献标题:   Supersymmetric quantum mechanics in graphene
  • 文献类型:   Article, Proceedings Paper
  • 作  者:   PARK KS, YI KS
  • 作者关键词:   graphene, quantum hall effect, index theorem, supersymmetry
  • 出版物名称:   JOURNAL OF THE KOREAN PHYSICAL SOCIETY
  • ISSN:   0374-4884
  • 通讯作者地址:   Pusan Natl Univ
  • 被引频次:   6
  • DOI:   10.3938/jkps.50.1678
  • 出版年:   2007

▎ 摘  要

To understand the unusual quantum Hall effects in graphene, we exploit the supersymmetric quantum mechanics on the basis of the index theorem and a higher degree of symmetry. The index theorem relates the zero-energy states to the topology of the compact lattice. We claim that the zero-energy state emerges naturally, provided the Zeeman splitting becomes as large as the Landau level separation at the Fermi points in graphene. This results in the fact that supersymmetry is a good symmetry. In the case of nonzero energy, the up-spin and the down-spin states provide the exact higher symmetry of spin, forming a supersymmetric multiplet. We describe briefly a unified picture for the peculiar and unconventional quantum Hall effects in graphene on the basis of the supersymmetric quantum mechanics.