Critical temperature of superconductor/ferromagnet bilayers
YV Fominov, NM Chtchelkatchev… - Journal of Experimental …, 2001 - Springer
Journal of Experimental and Theoretical Physics Letters, 2001•Springer
Superconductor/ferromagnet bilayers are known to exhibit nontrivial dependence of the
critical temperature T c on the thickness df of the ferromagnetic layer. We develop a general
method for investigation of T c as a function of the bilayer parameters. It is shown that
interference of quasiparticles makes T c (df) a nonmonotonic function. The results are in
good agreement with experiment. Our method also applies to multilayered structures.
critical temperature T c on the thickness df of the ferromagnetic layer. We develop a general
method for investigation of T c as a function of the bilayer parameters. It is shown that
interference of quasiparticles makes T c (df) a nonmonotonic function. The results are in
good agreement with experiment. Our method also applies to multilayered structures.
Abstract
Superconductor/ferromagnet bilayers are known to exhibit nontrivial dependence of the critical temperature T c on the thickness d f of the ferromagnetic layer. We develop a general method for investigation of T c as a function of the bilayer parameters. It is shown that interference of quasiparticles makes T c (d f ) a nonmonotonic function. The results are in good agreement with experiment. Our method also applies to multilayered structures.
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