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Metal-semiconductor (semimetal) superlattices on a graphite sheet with vacancies |
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| Authors: | L A Chernozatonskii P B Sorokin E É Belova J Brüning A S Fedorov |
| Institution: | (1) Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, ul. Kosygina 4, Moscow, 119991, Russia;(2) Institute of Mathematics, Humboldt University of Berlin, Berlin, 12489, Germany;(3) Kirenskiĭ Institute of Physics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660049, Russia |
| Abstract: | It has been found that periodically closely spaced vacancies on a graphite sheet cause a significant rearrangement 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. |
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