Robust zero-averaged wave-number gap inside gapped graphene superlattices
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- ) gap is formed inside the gapped graphene-based superlattices, and the condition for obtaining such a zero- gap is analytically presented. The properties of this zero- 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- gap are very insensitive to the structural disorder for the finite graphene-based periodic-barrier systems.
Keywords
Cite
@article{arxiv.1008.0504,
title = {Robust zero-averaged wave-number gap inside gapped graphene superlattices},
author = {Li-Gang Wang and Xi Chen},
journal= {arXiv preprint arXiv:1008.0504},
year = {2015}
}
Comments
15 pages, 6 figures