Type-1.5 Superconductors
Superconductivity
2009-11-13 v3
Abstract
We demonstrate the existence of a novel superconducting state in high quality two-component MgB2 single crystalline superconductors where a unique combination of both type-1 (kappa_1 < 0.707) and type-2 (kappa_2 > 0.707) superconductor conditions is realized for the two components of the order parameter. This condition leads to a vortex-vortex interaction attractive at long distances and repulsive at short distances, which stabilizes unconventional stripe- and gossamer-like vortex patterns that we have visualized in this type-1.5 superconductor using Bitter decoration and also reproduced in numerical simulations.
Cite
@article{arxiv.0902.0997,
title = {Type-1.5 Superconductors},
author = {V. V. Moshchalkov and M. Menghini and T. Nishio and Q. H. Chen and A. V. Silhanek and V. H. Dao and L. F. Chibotaru and N. D. Zhigadlo and J. Karpinsky},
journal= {arXiv preprint arXiv:0902.0997},
year = {2009}
}
Comments
accepted in Phys. Rev. Lett