• 文献标题:   Gauge transformations of spin-orbit interactions in graphene
  • 文献类型:   Article
  • 作  者:   BERCHE B, BOLIVAR N, LOPEZ A, MEDINA E
  • 作者关键词:  
  • 出版物名称:   EUROPEAN PHYSICAL JOURNAL B
  • ISSN:   1434-6028 EI 1434-6036
  • 通讯作者地址:   Univ Lorraine
  • 被引频次:   2
  • DOI:   10.1140/epjb/e2015-60257-4
  • 出版年:   2015

▎ 摘  要

Inclusion of spin-dependent interactions in graphene in the vicinity of the Dirac points can be posed in terms of non-Abelian gauge potentials. Such gauge potentials being surrogates of physical electric fields and material parameters, only enjoy a limited gauge freedom. A general gauge transformation thus changes the physical model. We argue that this property can be useful in connecting reference physical situations, such as free particle or Rashba interactions to non-trivial physical Hamiltonians with a new set of spin-orbit interactions, albeit constrained to being isoenergetic. We analyse different combinations of spin-orbit interactions in the case of monolayer graphene and show how they are related by means of selected non-Abelian gauge transformations.