Transport properties through double-magnetic-barrier structures in graphene

We study electrons tunneling through a double-magnetic-barrier structure on the surface of monolayer graphene. The transmission probability and the conductance are calculated by using the transfer matrix method. The results show that the normal incident transmission probability is blocked by the mag...

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Bibliographic Details
Published inChinese physics B Vol. 20; no. 7; pp. 405 - 409
Main Author 王素新 李志文 刘建军 李玉现
Format Journal Article
LanguageEnglish
Published 01.07.2011
Subjects
Blocking
Conductance
Electron tunneling
Graphene
Magnetic vector potentials
Mathematical analysis
Monolayers
Transport properties
传输概率
传输特性
传输矩阵方法
克莱因
电子束
石墨表面
磁势垒结构
结构参数
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Summary:We study electrons tunneling through a double-magnetic-barrier structure on the surface of monolayer graphene. The transmission probability and the conductance are calculated by using the transfer matrix method. The results show that the normal incident transmission probability is blocked by the magnetic vector potential and the Klein tunneling region depends strongly on the direction of the incidence electron. The transmission probability and the conductance can be modulated by changing structural parameters of the barrier, such as width and height, offering a possibility to control electron beams on graphene.
Bibliography:Wang Su-Xin, Li Zhi-Wen, Liu Jian-Jun, Li Yu-Xian a） Department of Physics, Hebei Normal College for Nationalities, Chengde 067000, China b） Hebei Advanced Film Laboratory, Shijiazhuang 050016, China c） College of Physics, Hebei Normal University, Shijiazhuang 050016, China
transmission probability, conductance, double-magnetic-barrier, graphene
We study electrons tunneling through a double-magnetic-barrier structure on the surface of monolayer graphene. The transmission probability and the conductance are calculated by using the transfer matrix method. The results show that the normal incident transmission probability is blocked by the magnetic vector potential and the Klein tunneling region depends strongly on the direction of the incidence electron. The transmission probability and the conductance can be modulated by changing structural parameters of the barrier, such as width and height, offering a possibility to control electron beams on graphene.
11-5639/O4
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ISSN:1674-1056
2058-3834
DOI:10.1088/1674-1056/20/7/077305