期刊
JOURNAL OF LOW TEMPERATURE PHYSICS
卷 136, 期 5-6, 页码 385-400出版社
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1023/B:JOLT.0000041274.35465.56
关键词
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Superconductor-ferromagnet-superconductor (SFS) pi-junctions(1) were investigated experimentally. The transitions to pi-state and back to the conventional 0-state were found to result from temperature decrease or ferromagnetic interlayer thickness increase. Thickness dependence of the critical current was studied and nonmonotonic behavior was observed. The SF-proximity effect was also examined on SF-bilayers. It is shown that, due to the spatial oscillations of the induced superconducting order parameter in the ferromagnet, the critical temperature of the SF-bilayer has a minimum when the thickness of the ferromagnetic layer is close to a quarter of the oscillation period.
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