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Article

Superconducting Order Parameter Nucleation and Critical Currents in the Presence of Weak Stray Fields in Superconductor/Insulator/Ferromagnet Hybrids

1
Department of Telecommunications, Belarusian State University of Informatics and Radioelectronics, 220013 Minsk, Belarus
2
Department of Theoretical Physics and Astrophysics, Belarusian State University, 220030 Minsk, Belarus
3
Department of Condensed Matter Physics, National Research Nuclear University (MEPhI), 115409 Moscow, Russia
4
Department of Physics “E.R. Caianiello”, Università degli Studi di Salerno, I-84084 Fisciano (Sa), Italy
5
Department of Physics “E.R. Caianiello”, CNR-SPIN, c/o Università degli Studi di Salerno, I-84084 Fisciano (Sa), Italy
*
Author to whom correspondence should be addressed.
Coatings 2021, 11(5), 507; https://doi.org/10.3390/coatings11050507
Received: 8 March 2021 / Revised: 15 April 2021 / Accepted: 21 April 2021 / Published: 25 April 2021
(This article belongs to the Special Issue Advances in Superconducting Films)
The stray fields produced by ferromagnetic layers in Superconductor/Insulator/Ferromagnet (S/I/F) heterostructures may strongly influence their superconducting properties. Suitable magnetic configurations can be exploited to manipulate the main parameters of the hybrids. Here, the nucleation of the superconducting phase in an external magnetic field that periodically oscillates along the film width is studied on the base of the numerical solution of the linearized system of Usadel equations. In addition, the effect of the magnetic configuration of the F-layer on the temperature dependence of the critical current density, Jc(T), is investigated in the framework of the Ginzburg–Landau phenomenological theory on the base of the oscillating model of a stray field. By following this approach, the Jc(T) dependence of a Nb/SiO2/PdNi trilayer is reproduced for different magnetic configurations of the PdNi layer. View Full-Text
Keywords: S/F hybrids; electromagnetic coupling; theories and models of superconducting state S/F hybrids; electromagnetic coupling; theories and models of superconducting state
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MDPI and ACS Style

Kushnir, V.N.; Prischepa, S.L.; Trezza, M.; Cirillo, C.; Attanasio, C. Superconducting Order Parameter Nucleation and Critical Currents in the Presence of Weak Stray Fields in Superconductor/Insulator/Ferromagnet Hybrids. Coatings 2021, 11, 507. https://doi.org/10.3390/coatings11050507

AMA Style

Kushnir VN, Prischepa SL, Trezza M, Cirillo C, Attanasio C. Superconducting Order Parameter Nucleation and Critical Currents in the Presence of Weak Stray Fields in Superconductor/Insulator/Ferromagnet Hybrids. Coatings. 2021; 11(5):507. https://doi.org/10.3390/coatings11050507

Chicago/Turabian Style

Kushnir, Vasiliy N., Serghej L. Prischepa, Michela Trezza, Carla Cirillo, and Carmine Attanasio. 2021. "Superconducting Order Parameter Nucleation and Critical Currents in the Presence of Weak Stray Fields in Superconductor/Insulator/Ferromagnet Hybrids" Coatings 11, no. 5: 507. https://doi.org/10.3390/coatings11050507

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