Magnetic anisotropy in ferromagnetic Josephson junctions


Abstract in English

Magnetotransport measurements were done on $Nb/Al_2O_3/Cu/Ni/Nb$ superconductor-insulator-ferromagnet-superconductor Josephson tunnel junctions. Depending on ferromagnetic $Ni$ interlayer thickness and geometry the standard (1d) magnetic field dependence of critical current deviates from the text-book model for Josephson junctions. The results are qualitatively explained by a short Josephson junction model based on anisotropy and 2d remanent magnetization.

Download