mriselMagnetic Resonance in SolidsMagnetic Resonance in Solids2072-5981Kazan Federal Universitymrisel-146Research ArticleСтатьиThe peculiarities of the operation of the superconducting spin valveGarifullinI. A.

420029 Kazan

ilgiz0garifullin@gmail.comGarif'yanovN. N.

420029 Kazan

LeksinP. V.

420029 Kazan

KamashevA. A.

420029 Kazan

FominovYa. V.

119334 Moscow; 141700 Dolgoprudny

SchumannJ.

D-01171 Dresden

KataevV.

D-01171 Dresden

BüchnerB.

D-01171 Dresden; D-01062 Dresden

Zavoisky Physical-Technical Institute, Kazan Scientific Center of Russian Academy of SciencesRussian FederationL. D. Landau Institute for Theoretical Physics RAS; Moscow Institute of Physics and TechnologyRussian FederationLeibniz Institute for Solid State and Materials Research IFW DresdenGermanyLeibniz Institute for Solid State and Materials Research IFW Dresden; Institut für Festkörperphysik, Technische Universität DresdenGermany201419042014162SPECIAL ISSUE dedicated to Boris I. Kochelaev's 80th birthday14208 (14 pp.)Copyright © Garifullin I.A., Garif'yanov N.N., Leksin P.V., Kamashev A.A., Fominov Y.V., Schumann J., Kataev V., Büchner B., 20242024Garifullin I.A., Garif'yanov N.N., Leksin P.V., Kamashev A.A., Fominov Y.V., Schumann J., Kataev V., Büchner B.Garifullin I.A., Garif'yanov N.N., Leksin P.V., Kamashev A.A., Fominov Y.V., Schumann J., Kataev V., Büchner B.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://www.mrsej.ru/jour/article/view/146

Review of our recent results concerning the spin valve effect are presented. Using the spin switch design F1/F2/S proposed theoretically that comprises a ferromagnetic bilayer (F1/F2) as a ferromagnetic component, and an ordinary superconductor (S) as the second interface component, we have realized for the first time a full spin switch effect for the superconducting current. For CoOx/Fe1/Cu/Fe2/In multilayered systems with varying Fe2-layer thickness we observed the sign-changing oscillating behavior of the spin valve effect ΔTc = TcAP - TcP  (here TcAP and TcP are the superconducting transition temperatures for antiparallel and parallel orientations of magnetizations of the F1 and F2 layers, respectively). We have also studied the angular dependence of Tc for the spin valve system CoOx/Fe1/Cu/Fe2/Pb. We found that this dependence is nonmonotonic when passing from the parallel to the antiparallel case of mutual orientation of magnetizations of the Fe1 and Fe2 layers and reveals a distinct minimum near the orthogonal configuration. The analysis of the data in the framework of the superconducting triplet spin valve theory gives direct evidence for the long-range triplet superconductivity arising due to noncollinearity of the two magnetizations.

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The authors declare that there are no conflicts of interest present.