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题名: Novel electronic structures of superlattice composed of graphene and silicene
作者: Yu, S ;  Li, XD ;  Wu, SQ ;  Wen, YH ;  Zhou, S ;  Zhu, ZZ
刊名: MATERIALS RESEARCH BULLETIN
出版日期: 2014
卷号: 50, 期号:-, 页码:268-272
关键词: TOTAL-ENERGY CALCULATIONS ;  WAVE BASIS-SET
学科分类: Physics
DOI: 10.1016/j.materresbull.2013.11.033
通讯作者: Zhu, ZZ (reprint author), Xiamen Univ, Dept Phys, 422 Simin Nanlu Xiamen, Fujian 361005, Peoples R China.
部门归属: [Yu, S.; Li, X. D.; Wu, S. Q.; Wen, Y. H.; Zhu, Z. Z.] Xiamen Univ, Dept Phys, Fujian 361005, Peoples R China; [Yu, S.; Li, X. D.; Wu, S. Q.; Wen, Y. H.; Zhu, Z. Z.] Xiamen Univ, Inst Theoret Phys & Astrophys, Fujian 361005, Peoples R China; [Zhou, S.; Zhu, Z. Z.] Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China; [Zhu, Z. Z.] Fujian Prov Key Lab Theoret & Computat Chem, Xiamen 361005, Peoples R China
英文摘要: Superlattice is a major force in providing man-made materials with unique properties. Here we report a study of the structural and electronic properties of a superlattice made with alternate stacking of graphene and hexagonal silicene. Three possible stacking models, i.e., the top-, bridge- and hollow-stacking, are considered. The top-stacking is found to be the most stable pattern. Although both the freestanding graphene and silicene are semi-metals, our results suggest that the graphene and silicene layers in the superlattice both exhibit metallic electronic properties due to a small amount of charge transfer from the graphene to the silicene layers. More importantly, the Dirac point of graphene is folded to the Gamma-point of the superlattice, instead of the K-point in the isolated graphene. Such a change in the Dirac point of graphene could lead to significant change in the transportation property of the graphene layer. Moreover, the band structure and the charge transfer indicate that the interaction between the stacking sheets in the graphene/silicene superlattice is more than just the van der Waals interaction. (C) 2013 Elsevier Ltd. All rights reserved.
资助者: National 973 Program of China [2011CB935903]; National Natural Science Foundation of Chinaunder [11004165, 21233004, 11104229]
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000331920500044
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15484
Appears in Collections:理论物理所2014年知识产出 _期刊论文

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Recommended Citation:
Yu, S,Li, XD,Wu, SQ,et al. Novel electronic structures of superlattice composed of graphene and silicene[J]. MATERIALS RESEARCH BULLETIN,2014,50(-):268-272.
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