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

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

2008-07-16

arxiv.org/abs/0807.2560v1

Phys. Rev. B 78, 134505 (2008)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

10 pages, 7 figures

Scientific paper

10.1103/PhysRevB.78.134505

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.

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