We investigate the Josephson transport through a ferromagnetic oxide film, e.g., La2BaCuO5, theoretically. Using the recursive Green's function technique, we found the formation of a pi-junction in such systems. Moreover the 0-pi phase transition is induced by increasing the temperature. Such ferromagnetic-oxide based Josephson junctions may become an element in the architecture of future quantum computers.
@article{arxiv.1010.0042,
title = {Thermally induced 0-pi phase transition in Josephson junctions through a ferromagnetic oxide film},
author = {Shiro Kawabata and Yasuhiro Asano and Alexander A. Golubov and Yukio Tanaka and Satoshi Kashiwaya},
journal= {arXiv preprint arXiv:1010.0042},
year = {2013}
}