Nonsinusoidal current-phase relation in strongly ferromagnetic and moderately disordered SFS junctions

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Konschelle, F.
Cayssol, J.
Buzdin, A.
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We study the Josephson current in a junction comprising two superconductors linked by a strong ferromagnet in presence of impurities. We focus on a regime where the electron (and hole) motion is ballistic over the exchange length and diffusive on the scale of the weak link length. The current-phase relation is obtained for both two- and three dimensional ferromagnetic weak links. In the clean limit, the possibility of temperature-induced 0- transitions is demonstrated while the corresponding critical current versus temperature dependences are also studied.
Comment: 10 pages, 7 figures
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Condensed Matter - Mesoscale and Nanoscale Physics
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