Electronic properties of α -graphyne nanoribbons under the electric field effect

نویسنده:
, , , , , , ,
سال
: 2014
چکیده: In this paper, we investigate the electronic structure of both armchair and zigzag α -graphyne nanor-

ibbons. We use a simple tight binding model to study the variation of the electronic band gap in

α -graphyne nanoribbon. The effects of ribbon width, transverse electric field and edge shape on the

electronic structure have been studied. Our results show that in the absence of external electric

field,zigzag α-graphyne nanoribbons are semimetal and the electronic band gap in armchair α-graphyne

nanoribbon oscillates and decreases with ribbon's width. By applying an external electric field the band

gap in the electronic structure of zigzag α-graphyne nanoribbon opens and oscillates with ribbon width

and electric field magnitude. Also the band gap of armchair α-graphyne nanoribbon decreases in low

electric field, but it has an oscillatory growth behavior for high strength of external electric field.
کلیدواژه(گان): Graphyne,Tight binding,Nanoribbon,Electronic structure,Graphyne,Tight binding,Nanoribbon,Electronic structure,Band gap
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