Modes splitting in graphene-based double-barrier waveguides

doi:10.1088/1674-1056/26/3/030301

中国物理B ›› 2017, Vol. 26 ›› Issue (3): 30301-030301.doi: 10.1088/1674-1056/26/3/030301

Modes splitting in graphene-based double-barrier waveguides

Si-Pu You(有四普), Ying He(何英), Yan-Fang Yang(杨艳芳), Hui-Fang Zhang(张惠芳)

Department of Physics, College of Sciences, Shanghai University, Shanghai 200444, China

收稿日期:2016-06-28 修回日期:2016-11-17 出版日期:2017-03-05 发布日期:2017-03-05
通讯作者: Ying He E-mail:heying@staff.shu.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11204170 and 61108010) and the Shanghai Municipal Commission of Science and Technology, China (Grant No. 16ZR1411600).

Modes splitting in graphene-based double-barrier waveguides

Si-Pu You(有四普), Ying He(何英), Yan-Fang Yang(杨艳芳), Hui-Fang Zhang(张惠芳)

Department of Physics, College of Sciences, Shanghai University, Shanghai 200444, China

Received:2016-06-28 Revised:2016-11-17 Online:2017-03-05 Published:2017-03-05
Contact: Ying He E-mail:heying@staff.shu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11204170 and 61108010) and the Shanghai Municipal Commission of Science and Technology, China (Grant No. 16ZR1411600).

摘要/Abstract

摘要：

The graphene-based double-barrier waveguides induced by electric field have been investigated. The guided modes can only exist in the case of Klein tunneling, and the fundamental mode is absent. The guided modes in the single-barrier waveguide split into symmetric and antisymmetric modes with different incident angles in the double-barrier waveguide. The phase difference between electron states and hole states is also discussed. The phase difference for the two splitting modes is close to each other and increases with the order of guided modes. These phenomena can be helpful for the potential applications in graphene-based optoelectronic devices.

关键词: graphene, double-barrier waveguides, modes splitting

Abstract:

Key words: graphene, double-barrier waveguides, modes splitting

中图分类号: (Relativistic wave equations)

03.65.Pm

05.60.Gg (Quantum transport) 94.05.Pt (Wave/wave, wave/particle interactions) 41.75.Fr (Electron and positron beams)

有四普, 何英, 杨艳芳, 张惠芳. Modes splitting in graphene-based double-barrier waveguides[J]. 中国物理B, 2017, 26(3): 30301-030301.

Si-Pu You(有四普), Ying He(何英), Yan-Fang Yang(杨艳芳), Hui-Fang Zhang(张惠芳). Modes splitting in graphene-based double-barrier waveguides[J]. Chin. Phys. B, 2017, 26(3): 30301-030301.

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