Superharmonic long-range triplet current in a diffusive Josephson junction
Caroline Richard, Manuel Houzet, and Julia S. Meyer
Accepted
We study the Josephson current through a long ferromagnetic bilayer in the diffusive regime. For non-collinear magnetizations, we find that the current-phase relation is dominated by its second harmonic, which corresponds to the long-range coherent propagation of two triplet pairs of electrons.