Nb/Cu superconducting superlattices have been fabricated by dc magnetron sputtering. This system shows a vortex glass transition with critical exponents similar to high temperatures superconductors exponents. The transition dymensionality is governed by the superconducting coupling regime. The vortex glass transition shows a pure two dimensional behavior in decoupled superlattices and a quasi-two dimensional behavior in the superlattice coupling regime.
@article{arxiv.cond-mat/0409665,
title = {Vortex-glass transition in superconducting Nb/Cu superlattices},
author = {J. E. Villegas and J. L. Vicent},
journal= {arXiv preprint arXiv:cond-mat/0409665},
year = {2009}
}