Motivated by a recent experiment evidencing triplet superconductivity in a ferromagnetic Josephson junction with a Cu2MnAl-Heusler barrier, we construct a theoretical model accounting for this observation. The key ingredients in our model which generate the triplet supercurrent are \textit{spin-active zones}, characterised by an effective canted interface magnetic moment. Using a numerical solution of the quasiclassical equations of superconductivity with spin-active boundary conditions, we find qualitatively very good agreement with the experimentally observed supercurrent. Further experimental implications of the spin-active zones are discussed.
@article{arxiv.1004.5124,
title = {Triplet supercurrent due to spin-active zones in a Josephson junction},
author = {Jacob Linder and Asle Sudbø},
journal= {arXiv preprint arXiv:1004.5124},
year = {2015}
}
Comments
4 pages, 4 figures. Revised version with additional results. Accepted for publication in PRB Rapid Communications