Determining the current polarization in Al/Co nanostructured point contacts
Superconductivity
2009-11-10 v1 Mesoscale and Nanoscale Physics
Abstract
We present a study of the Andreev reflections in superconductor/ferromagnet nanostructured point contacts. The experimental data are analyzed in the frame of a model with two spin-dependent transmission coefficients for the majority and minority charge carriers in the ferromagnet. This model consistently describes the whole set of conductance measurements as a function of voltage, temperature, and magnetic field. The ensemble of our results shows that the degree of spin polarization of the current can be unambiguously determined using Andreev physics.
Cite
@article{arxiv.cond-mat/0306241,
title = {Determining the current polarization in Al/Co nanostructured point contacts},
author = {F. Perez-Willard and J. C. Cuevas and C. Suergers and P. Pfundstein and J. Kopu and M. Eschrig and H. v. Loehneysen},
journal= {arXiv preprint arXiv:cond-mat/0306241},
year = {2009}
}
Comments
4 pages, RevTeX4, 3 figures, 1 table