• 文献标题:   Tunneling through finite graphene superlattices: resonance splitting effect
  • 文献类型:   Article
  • 作  者:   PHAM CH, NGUYEN VL
  • 作者关键词:   graphene superlattice, tunneling, resonance splitting
  • 出版物名称:   JOURNAL OF PHYSICSCONDENSED MATTER
  • ISSN:   0953-8984 EI 1361-648X
  • 通讯作者地址:   SISSA
  • 被引频次:   7
  • DOI:   10.1088/0953-8984/27/9/095302
  • 出版年:   2015

▎ 摘  要

An exact expression of the transmission probability through a finite graphene superlattice with an arbitrary number of potential barriers n is derived in two cases of the periodic potential: rectangular electric potential and delta-function magnetic potential. Obtained transmission probabilities show two types of resonance energy: barrier-induced resonance energies unchanged as n varies and well-induced resonance energies that have undergone the (n - 1)-fold splitting as n increases. Supported by numerical calculations for various types of graphene superlattices, these analytical findings are assumed to be equally applied to all of the finite graphene superlattices regardless of their potential nature (electric or magnetic) and potential barrier shapes.