Abstract:
The maximal supercurrent $I_m$ of a short Josephson junction formed by an edge contact of two superconducting films is calculated for the case where the junction is placed in a periodic field produced by a chain of magnetic nanoparticles. The commensurability effects occurring when the magnetic flux of a homogeneous external field $H_0$ through an elementary cell is equal to an integral number of magnetic flux quanta $\Phi_0$ are considered. The effects give rise to additional maxima in the $I_m(H_0)$ dependence.