Silicene on substrates:A theoretical perspective

Silicene, as the silicon analog of graphene, is successfully fabricated by epitaxially growing it on various substrates.Like free-standing graphene, free-standing silicene possesses a honeycomb structure and Dirac-cone-shaped energy band,resulting in many fascinating properties such as high carrier...

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Bibliographic Details
Published in:Chinese physics B 2015-08, Vol.24 (8), p.87-98
Main Author: 钟红霞 屈贺如歌 王洋洋 史俊杰 吕劲
Format: Article
Language:English
Subjects:
Atomic structure
cone
substrate
Crystal structure
effects
Energy bands
Epitaxial growth
Graphene
Hall effect
Honeycomb
silicene
dirac
Silicon substrates
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Summary:Silicene, as the silicon analog of graphene, is successfully fabricated by epitaxially growing it on various substrates.Like free-standing graphene, free-standing silicene possesses a honeycomb structure and Dirac-cone-shaped energy band,resulting in many fascinating properties such as high carrier mobility, quantum spin Hall effect, quantum anomalous Hall effect, and quantum valley Hall effect. The existence of the honeycomb crystal structure and the Dirac cone of silicene is crucial for observation of its intrinsic properties. In this review, we systematically discuss the substrate effects on the atomic structure and electronic properties of silicene from a theoretical point of view, especially with emphasis on the changes of the Dirac cone.
ISSN:1674-1056
2058-3834
1741-4199
DOI:10.1088/1674-1056/24/8/087308