Transport and Conductance in Fibonacci Graphene Superlattices with Electric and Magnetic Potentials  

作　　者：尹贻恒 牛燕雄 丁铭 刘海月 梁振江 

机构地区：[1]School of Instrument Science and Optoelectronic Engineering,Beihang University

出　　处：《Chinese Physics Letters》2016年第5期88-91,共4页中国物理快报（英文版）

摘　　要：We investigate the electron transport and conductance properties in Fibonacci quasi-periodic graphene superlat- rices 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 w^ve number. The magnetic and eleetr/c 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.We investigate the electron transport and conductance properties in Fibonacci quasi-periodic graphene superlat- rices 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 w^ve number. The magnetic and eleetr/c 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.

关 键 词：of on with in Transport and Conductance in Fibonacci Graphene Superlattices with Electric and Magnetic Potentials 

分 类 号：TQ127.11[化学工程—无机化工]