Proximity-induced superconductivity in graphene
JETP letters, 2008•Springer
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, TT c, 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)∝ E g is expected to destroy the spectral gap driving …
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, TT c, 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)∝ E g is expected to destroy the spectral gap driving …
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, T c , can reach several Kelvins at the experimentally accessible range of parameters. At low temperatures, T T c , 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) ∝ 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).
Springer