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VOLUME 74 (2001) | ISSUE 2 | PAGE 101
Critical temperature of superconductor/ferromagnet bilayers
PACS: 74.50.+r, 74.80.Dm, 75.30.Et
Abstract
Superconductor/ferromagnet bilayers are known to exhibit nontrivial dependence of the critical temperature Tc on the thickness df of the ferromagnetic layer. We develop a general method for investigation of Tc as a function of the bilayer's parameters. It is shown that interference of quasiparticles makes Tc(df) a nonmonotonic function. The results are in good agreement with experiment. Our method also applies to multilayered structures.