A ferromagnetic Josephson junction with a spin-flipper (magnetic impurity) sandwiched in-between acts as a phase battery that can store quantized amounts of superconducting phase difference Φ0 in the ground state of the junction. Moreover, for such Φ0-Josephson junction anomalous Josephson current appears at zero phase difference. We study the properties of this quantum spin-flip scattering induced anomalous Josephson current, especially its tun-ability via misorientation angle between two Ferromagnets.
@article{arxiv.1811.02484,
title = {Quantized Josephson phase battery},
author = {Subhajit Pal and Colin Benjamin},
journal= {arXiv preprint arXiv:1811.02484},
year = {2019}
}
Comments
11 pages (with supplementary material), 9 figures, accepted for publication in EPL (Euro Physics Letters)