• 文献标题:   Transport and Conductance in Fibonacci Graphene Superlattices with Electric and Magnetic Potentials
  • 文献类型:   Article
  • 作  者:   YIN YH, NIU YX, DING M, LIU HY, LIANG ZJ
  • 作者关键词:  
  • 出版物名称:   CHINESE PHYSICS LETTERS
  • ISSN:   0256-307X EI 1741-3540
  • 通讯作者地址:   Beihang Univ
  • 被引频次:   1
  • DOI:   10.1088/0256-307X/33/5/057202
  • 出版年:   2016

▎ 摘  要

We investigate the electron transport and conductance properties in Fibonacci quasi-periodic graphene superlattices with electrostatic barriers and magnetic vector potentials. It is found that a new Dirac point appears in the band structure of graphene superlattice and the position of the Dirac point is exactly located at the energy corresponding to the zero-averaged wave number. The magnetic and electric potentials modify the energy band structure and transmission spectrum in entirely diverse ways. In addition, the angular-dependent transmission is blocked by the potential barriers at certain incident angles due to the appearance of the evanescent states. The effects of lattice constants and different potentials on angular-averaged conductance are also discussed.