• 文献标题:   Tunneling mode in symmetrical graphene superlattices with one-dimensional period potentials
  • 文献类型:   Article
  • 作  者:   ZHANG YP, YIN YH, ZHANG HY
  • 作者关键词:  
  • 出版物名称:   EUROPEAN PHYSICAL JOURNALAPPLIED PHYSICS
  • ISSN:   1286-0042 EI 1286-0050
  • 通讯作者地址:   Shandong Univ Sci Technol
  • 被引频次:   0
  • DOI:   10.1051/epjap/2014130514
  • 出版年:   2014

▎ 摘  要

The properties of electronic transport in graphene superlattices which consist of symmetrical period potentials have been studied. It is found that such structures possess an unusual tunneling state inside the original forbidden gaps. Furthermore, the position of tunneling mode is highly dependent on the lattice constant and potential voltage but insensitive to period number, and a theoretical explanation for this phenomenon is proposed. Finally it is revealed that the electronic conductance is greatly enhanced and the Fano factor is strongly suppressed near the energy of the tunneling state. The characteristics of electron transport over symmetrical graphene superlattices may facilitate the development of many graphene-based electronics.