https://doi.org/10.1140/epjb/e2014-41075-8
Regular Article
Superlattice structures of silicene-based armchair nanoribbons by density functional theory calculation*
1
School of Physics and Electronic Science,
Fuyang Normal College,
Fuyang
236037, P.R.
China
2
School of Environmental and Chemical Engineering, Shanghai
University, Shanghai
200444, P.R.
China
3
Department of Physics and the State Key Laboratory of
Low-Dimensional Quantum Physics, Tsinghua University, Beijing
100084, P.R.
China
a
e-mail: wuyanning058@163.com
Received: 13 December 2013
Received in final form: 23 February 2014
Published online: 16 April 2014
Based on the DFT calculations, the various types of ASiSLs, which are the periodically repeated junctions made of ASiNRs with different widths, have been investigated. The band structures of ASiSLs were modulated by the size and strain of superlattices. The length of the narrow and wide nanoribbons plays interesting roles in the modulation of the electronic structures of ASiSLs. It could alter the band structure, and modify the distribution of the localized and dispersive states of superlattices. With the stain increased, the related energy gaps of ASiSLs will change, which are significantly different with that of the constituent nanoribbons.
Key words: Solid State and Materials
Supplementary material in the form of one pdf file available from the Journal web page at http://dx.doi.org/10.1140/epjb/e2014-41075-8
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2014
