Possible Origin for Oscillatory Superconducting Transition Temperature in Superconductor/Ferromagnet Multilayers.

作者: Th. Mühge , N. N. Garif'yanov , Yu. V. Goryunov , G. G. Khaliullin , L. R. Tagirov

DOI: 10.1103/PHYSREVLETT.77.1857

关键词:

摘要: We have studied superconducting and magnetic properties of sputtered Fe/Nb/Fe trilayers. For a fixed Nb thickness with changing Fe thickness, ${d}_{\mathrm{Fe}}$, nonmonotonic behavior the transition temperature ${T}_{c}$ was observed maximum at ${d}_{\mathrm{Fe}}\ensuremath{\approx}10$ \AA{}. The analysis magnetization data revealed that for ${d}_{\mathrm{Fe}}\ensuremath{\le}7$ \AA{} layer is nonmagnetic. interpretation attributed to existence this magnetically "dead" change interaction Cooper paris onset ferromagnetism ${d}_{\mathrm{Fe}}\ensuremath{\ge}7$

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