Electronic Energy Band and Transport Properties in Monolayer Graphene with Periodically Modulated Magnetic Vector Potential and Electrostatic Potential

We investigated the electronic energy band and transport features of graphene superlattice with periodically modulated magnetic vector potential and electrostatic potential. It is found that both parallel magnetic vector potential and electrostatic potential can decisively shift Dirac point in a dif...

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Bibliographic Details
Published in:Communications in theoretical physics 2012-02, Vol.57 (2), p.315-319
Main Author: 刘正方 伍清萍 刘念华
Format: Article
Language:English
Subjects:
Electronics
Electrostatics
Energy bands
Graphene
Magnetic vector potentials
Plugs
Switches
Transport
单层
周期性调制
电子状态
电子能带
石墨
磁矢势
输运性质
静电势
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Summary:We investigated the electronic energy band and transport features of graphene superlattice with periodically modulated magnetic vector potential and electrostatic potential. It is found that both parallel magnetic vector potential and electrostatic potential can decisively shift Dirac point in a different way, which may be an efficient way to achieve electron or hole filter. We a/so find that applying modulated parallel and anti-parallel magnetic vector potential to the electrons can efficiently change electronic states between pass and stop states, which can be useful in designing electron or hole switches and lead to large magneto-resistance.
ISSN:0253-6102
DOI:10.1088/0253-6102/57/2/25