Paper

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

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©2016 Chinese Physical Society and IOP Publishing Ltd
, , Citation Yi-Heng Yin et al 2016 Chinese Phys. Lett. 33 057202 DOI 10.1088/0256-307X/33/5/057202

0256-307X/33/5/057202

Abstract

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.

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10.1088/0256-307X/33/5/057202