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

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 po...

Full description

Saved in:
Bibliographic Details
Published inChinese physics letters Vol. 33; no. 5; pp. 88 - 91
Main Author 尹贻恒 牛燕雄 丁铭 刘海月 梁振江
Format Journal Article
LanguageEnglish
Published Chinese Physical Society and IOP Publishing 01.05.2016
Subjects
Fibonacci
电势
电子传输
电导性能
石墨
磁势
超晶格
运输
Online AccessGet full text
ISSN0256-307X
1741-3540
DOI10.1088/0256-307X/33/5/057202

Cover

More Information
Summary: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.
Bibliography: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.
11-1959/O4
Yi-Heng Yin, Yan-Xiong Niu, Ming Ding, Hai-Yue Liu, Zhen-Jiang Liang（ School of Instrument Science and Optoelectronic Engineering, Beihang University, Beijing 100191）
ISSN:0256-307X
1741-3540
DOI:10.1088/0256-307X/33/5/057202