Theory of proximity-induced superconductivity in graphene

M. V. Feigel'man, M. A. Skvortsov, K. S. Tikhonov

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

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, Tc, can reach several Kelvins at the experimentally accessible range of parameters. At low temperatures, T ≪ Tc, and zero magnetic field, the density of states is characterized by a small gap Eg ≤ Tc resulting from the collective proximity effect. Transverse magnetic field Hg (T) ∝ Eg 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 Hg 2 (T).

Original languageEnglish
Pages (from-to)1101-1105
Number of pages5
JournalSolid State Communications
Volume149
Issue number27-28
DOIs
Publication statusPublished - Jul 2009
Externally publishedYes

Keywords

  • A. Graphene
  • C. Josephson-junction array
  • D. Proximity effect
  • D. Superconductivity

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