Physics – Condensed Matter – Superconductivity
Scientific paper
2006-12-19
Phys. Rev. B 75, Issue 14 (2007)
Physics
Condensed Matter
Superconductivity
revised version
Scientific paper
10.1103/PhysRevB.75.184510
We analyze the Josephson current in a junction consisting of two superconductors (S) and a ferromagnetic layer (F) for arbitrary impurity concentration. In addition to non-magnetic impurities, we consider also magnetic ones and spin-orbit scattering. In the limit of weak proximity effect we solve the linearized Eilenberger equation and derive an analytical expression for the Josephson critical current valid in a broad range of parameters. This expression enables us to obtain not only known results in the dirty and clean limits but also in a intermediate region of the impurity concentration, which may be very important for comparison with experimental data.
Bergeret Sebastián F.
Efetov Konstantin B.
Volkov A. F.
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