SEMI OpenIR  > 半导体超晶格国家重点实验室
Valley beam splitter based on strained graphene
Zhai F; Ma YL; Chang K; Zhai, F (reprint author), Zhejiang Normal Univ, Ctr Stat & Theoret Condensed Matter Phys, Jinhua 321004, Peoples R China, logzhai@gmail.com
2011
Source PublicationNEW JOURNAL OF PHYSICS
ISSN1367-2630
Volume13Pages:83029
AbstractWe investigate theoretically the lateral displacements of valley-unpolarized electron beams in graphene after traversing a strained region. Valley double refraction occurs at the interface between the incident (unstrained) region and the strained region, in analogy with optical double refraction. It is shown that the exiting positions of K and K 0 transmitted beams, together with their distance D, can be tuned by the strain strength and the inclusion of an electrostatic potential. In addition, D can be enhanced by the wave effect near the valley-dependent transmission resonances. The enhancement is remarkable for graphene n-p-n (or p-n-p) junctions. Thus the Goos-Hanchen effect of transmitted beams for a normal/strained/normal graphene junction can be utilized to design a valley beam splitter.
metadata_83半导体超晶格国家重点实验室
Subject Area半导体物理
Funding OrganizationNSFC[10704013, 60525405, 10874175]; RFDP[200801411042]; Fundamental Research Funds for the Central Universities[DUT10LK36]
Indexed BySCI
Language英语
Date Available2012-01-06
Document Type期刊论文
Identifierhttp://ir.semi.ac.cn/handle/172111/22715
Collection半导体超晶格国家重点实验室
Corresponding AuthorZhai, F (reprint author), Zhejiang Normal Univ, Ctr Stat & Theoret Condensed Matter Phys, Jinhua 321004, Peoples R China, logzhai@gmail.com
Recommended Citation
GB/T 7714
Zhai F,Ma YL,Chang K,et al. Valley beam splitter based on strained graphene[J]. NEW JOURNAL OF PHYSICS,2011,13:83029.
APA Zhai F,Ma YL,Chang K,&Zhai, F .(2011).Valley beam splitter based on strained graphene.NEW JOURNAL OF PHYSICS,13,83029.
MLA Zhai F,et al."Valley beam splitter based on strained graphene".NEW JOURNAL OF PHYSICS 13(2011):83029.
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