Mesoscopic Ferromagnet/Superconductor Junctions and the Proximity Effect
Mesoscale and Nanoscale Physics
2009-10-31 v1 Superconductivity
Abstract
We have measured the electrical transport of submicron ferromagnets (Ni) in contact with a mesoscopic superconductor (Al) for a range of interface resistances. In the geometry measured, the interface and the ferromagnet are measured separately. The ferromagnet itself shows no appreciable superconducting proximity effect, but the ferromagnet/superconductor interface exhibits strong temperature, field and current bias dependences. These effects are dependent on the local magnetic field distribution near the interface arising from the ferromagnet. We find that the temperature dependences may be fit to a modified version of the Blonder-Tinkham-Klapwijk theory for normal-superconductor transport.
Cite
@article{arxiv.cond-mat/0007433,
title = {Mesoscopic Ferromagnet/Superconductor Junctions and the Proximity Effect},
author = {J. Aumentado and V. Chandrasekhar},
journal= {arXiv preprint arXiv:cond-mat/0007433},
year = {2009}
}
Comments
4 eps figs