Metal-semiconductor (semimetal) superlattices on a graphite sheet with vacancies
arXiv:cond-mat/0611334 · doi:10.1134/S0021364006150033
Abstract
It has been found that periodically closely spaced vacancies on a graphite sheet cause a significant rearrange-ment of its electronic spectrum: metallic waveguides with a high density of states near the Fermi level are formed along the vacancy lines. In the direction perpendicular to these lines, the spectrum exhibits a semimetal or semiconductor character with a gap where a vacancy miniband is degenerated into impurity levels.
4 pages, 3 figures