Giant proximity effect in a phase-fluctuating superconductor

Details Giant proximity effect in a phase-fluctuating superconductor Giant proximity effect in a phase-fluctuating superconductor

2007-10-29

arxiv.org/abs/0710.5546v2

Phys. Rev. Lett. 101, 097004 (2008)

Physics

Condensed Matter

Superconductivity

4 pages, 3 figures; version to appear in PRL (results of simulations in 3d added). For related work and info visit http://ww

Scientific paper

10.1103/PhysRevLett.101.097004

When a tunneling barrier between two superconductors is formed by a normal material that would be a superconductor in the absence of phase fluctuations, the resulting Josephson effect can undergo an enormous enhancement. We establish this novel proximity effect by a general argument as well as a numerical simulation and argue that it may underlie recent experimental observations of the giant proximity effect between two cuprate superconductors separated by a barrier made of the same material rendered normal by severe underdoping.

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