Critical Current Oscillations versus Pureness of Superconductor-ferromagnet Nanoscopic Multilayers

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In our report we study how the oscillations and reentrant behaviour of critical parameters depends on the elastic scattering of electrons on atomic impurities in S/F multilayers. The expressions for the electric supercurrent and for the critical temperature were obtained from solutions of quasiclassical Eilenberger equations using the continuous boundary conditions. The obtained equations are used in this work to study the influence of elastic electron impurity scattering to the nonmonotonic behavior of the critical parameters. The obtained results indicate that both the and dependencies are strongly affected by elastic scattering in the electrodes. In marginal dirty and clean cases, the obtained results coincide with the known characteristics, while in the newly studied intermediate case one finds a number of peculiar features, which are probably observed in experiments.

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Journal: TechConnect Briefs
Volume: 2, Technical Proceedings of the 2003 Nanotechnology Conference and Trade Show, Volume 2
Published: February 23, 2003
Pages: 174 - 177
Industry sectors: Advanced Materials & Manufacturing | Sensors, MEMS, Electronics
Topic: Modeling & Simulation of Microsystems
ISBN: 0-9728422-1-7