Transport properties through double-magnetic-barrier structures in graphene

doi:10.1088/1674-1056/20/7/077305

中国物理B ›› 2011, Vol. 20 ›› Issue (7): 77305-077305.doi: 10.1088/1674-1056/20/7/077305

Transport properties through double-magnetic-barrier structures in graphene

刘建军¹, 李玉现¹, 王素新², 李志文²

(1)College of Physics, Hebei Normal University, Shijiazhuang 050016, China; (2)Department of Physics, Hebei Normal College for Nationalities, Chengde 067000, China

收稿日期:2010-12-07 修回日期:2011-01-28 出版日期:2011-07-15 发布日期:2011-07-15

Transport properties through double-magnetic-barrier structures in graphene

Wang Su-Xin(王素新)^a)b), Li Zhi-Wen(李志文)^a)b), Liu Jian-Jun(刘建军)^c), and Li Yu-Xian(李玉现)^c)†

^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

Received:2010-12-07 Revised:2011-01-28 Online:2011-07-15 Published:2011-07-15

摘要/Abstract

摘要： 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.

关键词: transmission probability, conductance, double-magnetic-barrier, graphene

Abstract: 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.

Key words: transmission probability, conductance, double-magnetic-barrier, graphene

中图分类号: (Electronic transport in nanoscale materials and structures)

73.63.-b

03.65.Pm (Relativistic wave equations) 75.70.Ak (Magnetic properties of monolayers and thin films) 73.23.Ad (Ballistic transport)

王素新, 李志文, 刘建军, 李玉现. Transport properties through double-magnetic-barrier structures in graphene[J]. 中国物理B, 2011, 20(7): 77305-077305.

Wang Su-Xin(王素新), Li Zhi-Wen(李志文), Liu Jian-Jun(刘建军), and Li Yu-Xian(李玉现). Transport properties through double-magnetic-barrier structures in graphene[J]. Chin. Phys. B, 2011, 20(7): 77305-077305.

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Transport properties through double-magnetic-barrier structures in graphene

Transport properties through double-magnetic-barrier structures in graphene

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