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arXiv · 1008.0504

Robust zero-averaged wave-number gap inside gapped graphene superlattices

Li-Gang Wang·Xi Chen
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Abstract

In this paper, the electronic band structures and its transport properties in the gapped graphene superlattices, with one-dimensional (1D) periodic potentials of square barriers, are systematically investigated. It is found that a zero averaged wave-number (zero-$\overline{k}$ ) gap is formed inside the gapped graphene-based superlattices, and the condition for obtaining such a zero-$\overline{k}$ gap is analytically presented. The properties of this zero-$\overline{k}$ gap including its transmission, conductance and Fano factor are studied in detail. Finally it is revealed that the properties of the electronic transmission, conductance and Fano factor near the zero-$\overline{k}$ gap are very insensitive to the structural disorder for the finite graphene-based periodic-barrier systems.

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Li-Gang Wang, Xi Chen. 2010-08-03. Robust zero-averaged wave-number gap inside gapped graphene superlattices. https://doi.org/10.1063/1.3525270

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