Controllаble Josephson 0–π Junction Based on a Four-Layer Ferromagnetic–Superconductor System (FSFS)

Borisova, O. N.; Tumanov, V. A.; Proshin, Yu. N.

doi:10.1134/s0031918x20050051

Phys. Metals Metallogr.

2020

DOI: 10.1134/s0031918x20050051

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Controllаble Josephson 0–π Junction Based on a Four-Layer Ferromagnetic–Superconductor System (FSFS)

O. N. Borisova

V. A. Tumanov

Yu. N. Proshin

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Cited by 4 publications

(1 citation statement)

References 23 publications

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“…( 4), makes it possible to reduce the boundaryvalue problem to a one-dimensional system of secondorder equations with constant coefficients. Further calculations are carried out in a standard way in the approximation of the layer-constant order parameter [28][29][30]. It has become very popular because of the combination of simplicity and good consistency with a more rigorous method of fundamental solutions [27].…”

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confidence: 99%

Critical Temperature of a Superconductor/Ferromagnet Nanostructure near a Magnetic Skyrmion

2022

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Contact between a superconductor and a chiral ferromagnet containing complex magnetic structures (helical or conical texture, skyrmion, and chiral float) has been considered. The case of a single skyrmion has been studied more thoroughly. The influence of these magnetic inhomogeneities on the critical temperature becomes significant only for nanoscale spin structures (about 100 nm or smaller). Skyrmion lattices and single skyrmions of such sizes have recently been observed in experiments with thin magnetic layers. Within the proximity effect theory in the dirty limit, an approximate approach has been proposed to calculate the critical temperature in these systems. Great influence of nanoscale spin vortices on the critical temperature, in combination with topological stability and a low current density that is necessary for their motion, makes it possible to use these systems as efficient superconducting spin valves.

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Critical Temperature of a Superconductor/Ferromagnet Nanostructure near a Magnetic Skyrmion

2022

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Critical Temperature and Order Parameter in Superconducting Heterostructures with Allowance for a Nonzero Coupling Constant in a Polydomain Ferromagnet

Tumanov,

Proshin

2024

Jetp Lett.

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The superconducting state in heterostructures containing layers of a superconductor and a ferromagnet, which is split into domains, has been studied taking into account the long-range electron–electron interaction in the ferromagnetic layer. The critical temperature and spatial distribution of the order parameter in different heterostructures have been calculated. Various types of spin valves have been examined, including a valve based on solitary reentrant superconductivity in asymmetric superconductor/superconductor/superconductor systems. A shift of the minimum has been observed in the dependence of the critical temperature of the superconductor/superconductor/superconductor system on the thickness of the ferromagnetic layer due to the presence of a domain structure. A state with alternating signs of the phase of the superconducting order parameter in one of the superconducting layers against the background of domain walls has been obtained. In superconductor/superconductor/superconductor systems, the alternation of the phase sign is also possible at the edge of one of the ferromagnetic layers because of the alternation of the magnetization direction. The possibility of using the sensitivity of the order parameter phase to magnetic inhomogeneities to create a controllable 0–π Josephson junction is discussed.

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Magnetization in Superconductor–Ferromagnetic Metal Bilayers Induced by the Inverse Proximity Effect

Yagovtsev

Pugach

Екомасов

et al. 2021

Phys. Metals Metallogr.

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Controllаble Josephson 0–π Junction Based on a Four-Layer Ferromagnetic–Superconductor System (FSFS)

Cited by 4 publications

References 23 publications

Critical Temperature of a Superconductor/Ferromagnet Nanostructure near a Magnetic Skyrmion

Critical Temperature of a Superconductor/Ferromagnet Nanostructure near a Magnetic Skyrmion

Critical Temperature and Order Parameter in Superconducting Heterostructures with Allowance for a Nonzero Coupling Constant in a Polydomain Ferromagnet

Magnetization in Superconductor–Ferromagnetic Metal Bilayers Induced by the Inverse Proximity Effect

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