Superconducting spin-valve effect in a heterostructure containing the Heusler alloy as a ferromagnetic layer

• Published in: Journal of magnetism and magnetic materials 2018-08, Vol.459, p.7-11
• Main Authors: Kamashev, A.A., Leksin, P.V., Garif’yanov, N.N., Validov, A.A., Schumann, J., Kataev, V., Büchner, B., Garifullin, I.A.
• Format: Article
• Language: English
• Subjects: Alloys; F 2 region; Ferrites; Ferromagnetism; Half-metallic ferromagnet; Heusler alloys; Magnetism; Spin valve; Spin valves; Substrates; Superconductivity; Thickness
• ISSN: 0304-8853; 1873-4766
• DOI: 10.1016/j.jmmm.2018.01.085

•The SC spin-valve effect in the Py/Heusler/Pb heterostructure was studied.•In these structures we observed a full switching between the normal and SC states.•Switching was realized between the parallel and perpendicular magnetization states. We have studied the superconducting spin-valve effect in a F1/F2/S heterostructure containing a Heusler alloy layer standing for an F2 layer. The Heusler alloy layer was grown at the substrate temperature Tsub=300K. According to our previous data in such preparation conditions this layer is a weak ferromagnet. For the samples with the Heusler layer thickness dHeusler=1 and 4 nm the full switching between the normal and superconducting states is realized with the dominant aid of the long-range triplet component of the superconducting pair condensate which occurs at the perpendicular mutual orientation of magnetizations.