Adjustment of superconductivity and ferromagnetism in the few-layered ferromagnet–superconductor nanostructures

• Published in: Физика низких температур
• Date: 2006
• Main Authors: Izyumov, Y.A., Khusainov, M.G., Proshin, Y.N.
• Format: Article
• Language: English
• Published: Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України 2006
• Subjects: К 100-летию со дня рождения Б.Г. Лазарева
• Online Access: https://nasplib.isofts.kiev.ua/handle/123456789/120346
• Journal Title: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Cite this: Adjustment of superconductivity and ferromagnetism in the few-layered ferromagnet–superconductor nanostructures / Y.A. Izyumov, M.G. Khusainov, Y.N. Proshin // Физика низких температур. — 2006. — Т. 32, № 8-9. — С. 1065–1077. — Бібліогр.: 36 назв. — англ.

The phase diagrams of the few-layered nanosystems consisting of dirty superconducting (S) and ferromagnetic (F) metals are investigated within the framework of the modern theory of the proximity effect taking into account the boundary conditions. The F/S tetralayer and pentalayer are shown to have considerably richer physics than the F/S bi- and trilayer (due to the interplay between the 0 and π phase superconductivity and the 0 and π phase magnetism and nonequivalence of layers) and even the F/S superlattices. It is proven that these systems can have different critical temperatures and fields for different S layers. This predicted decoupled superconductivity is found to manifest itself in its most striking way for F/S tetralayer. It is shown that F/S/F/S tetralayer is the most perspective candidate for use in superconducting spin nanoelectronics.