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VOLUME 78 (2003) | ISSUE 9 | PAGE 1073
π -junction realization due to the tunneling through thin ferromagnetic layer
PACS: 74.78.-w
Abstract
It is demonstrated that in superconductor-ferromagnet-superconductor (S/F/S) systems in the case of low interface transparency the transition into π -phase is not related with the oscillations of the superconducting order parameter in F-layer. In consequence the π -phase may exist at very thin F-layer thickness. The crossover from π -to 0-phase results in the non-monotonous temperature dependence of the critical current.