• 文献标题:   Tunable electronic transmission gaps in a graphene superlattice
  • 文献类型:   Article
  • 作  者:   LU WT, WANG SJ, LI W, WANG YL, JIANG H
  • 作者关键词:   transmission gap, graphene superlattice, energy filtering
  • 出版物名称:   PHYSICA BCONDENSED MATTER
  • ISSN:   0921-4526
  • 通讯作者地址:   Linyi Univ
  • 被引频次:   8
  • DOI:   10.1016/j.physb.2011.12.124
  • 出版年:   2012

▎ 摘  要

The transmission in graphene superlattices with adjustable barrier height is investigated using transfer-matrix method. It is found that one could control the angular range of transmission by changing the ratio of incidence energy and barrier height. The transmission as a function of incidence energy has more than one gaps, due to the appearance of evanescent waves in different barriers. Accordingly, more than one conductivity minimums are induced. The transmission gaps could be controlled by adjusting the incidence angle, the barrier height, and the barrier number, which gives the possibility to construct an energy-dependent wavevector filter. (C) 2011 Elsevier B.V. All rights reserved.