Journal
JETP LETTERS
Volume 88, Issue 11, Pages 747-751Publisher
MAIK NAUKA/INTERPERIODICA/SPRINGER
DOI: 10.1134/S0021364008230100
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- RFBR [07-02-00310]
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We propose a way of making graphene superconductive by putting on it small superconductive islands which cover a tiny fraction of graphene area. We show that the critical temperature, T-c, can reach several Kelvins at the experimentally accessible range of parameters. At low temperatures, T << T, and zero magnetic field, the density of states is characterized by a small gap E-g <= T-c resulting from the collective proximity effect. Transverse magnetic field H-g(T) proportional to E-g is expected to destroy the spectral gap driving graphene layer to a kind of a superconductive glass state. Melting of the glass state into a metal occurs at a higher field H-g2(T).
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