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Tuning of electronic properties of nanographene ribbons by a spatially modulated electric field
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10.1063/1.3372761
/content/aip/journal/jap/107/8/10.1063/1.3372761
http://aip.metastore.ingenta.com/content/aip/journal/jap/107/8/10.1063/1.3372761
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Geometric structures of (a) an armchair and (b) zigzag ribbon.

Image of FIG. 2.
FIG. 2.

Band structures of the [(a)-(c)] and the (d) armchair ribbons under spatially modulated electric fields. , , and represent the periodic length, the phase shift, and the strength of the modulated electric field, respectively. The Fermi level is set to zero.

Image of FIG. 3.
FIG. 3.

The band structure of the zigzag ribbon in the presence of a modulated electric field.

Image of FIG. 4.
FIG. 4.

The carrier densities of energy bands of the armchair ribbon at with or without a modulated electric field.

Image of FIG. 5.
FIG. 5.

The carrier densities of the partial flat band of the zigzag ribbon at and with or without a modulated electric field.

Image of FIG. 6.
FIG. 6.

The DOS of the and the armchair ribbons in a modulated electric fields.

Image of FIG. 7.
FIG. 7.

DOS of the zigzag ribbon under modulated electric fields.

Image of FIG. 8.
FIG. 8.

The -dependent energy gap is shown for the armchair ribbon [(a)-(b)] and the zigzag ribbon (c) at different and different . The inset in (b) shows the dependence of the energy gap on at and .

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/content/aip/journal/jap/107/8/10.1063/1.3372761
2010-04-28
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Tuning of electronic properties of nanographene ribbons by a spatially modulated electric field
http://aip.metastore.ingenta.com/content/aip/journal/jap/107/8/10.1063/1.3372761
10.1063/1.3372761
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