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July 16, 2026
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Controllable supercurrent in mesoscopic superconductor-normal metal-ferromagnet crosslike Josephson structures

Superconductor Science and Technology. 2021. Vol. 34. No. 9. Article 095001.
Golikova T. E., Wolf M. J., Beckmann D., Penzyakov G. A., Batov I. E., Bobkova I. V., Bobkov A. M., Ryazanov V. V.

A nonmonotonic dependence of the critical Josephson supercurrent on the injection current
through a normal metal/ferromagnet weak link from a single domain ferromagnetic strip has
been observed experimentally in nanofabricated planar crosslike S-N/F-S Josephson structures.
This behavior is explained by 0–π and π–0 transitions, which can be caused by the suppression
and Zeeman splitting of the induced superconductivity due to interaction between N and F
layers, and the injection of spin-polarized current into the weak link. A model considering both
effects has been developed. It shows the qualitative agreement between the experimental results
and the theoretical model in terms of spectral supercurrent-carrying density of states of S-N/F-S
structures and the spin-dependent double-step nonequilibrium quasiparticle distribution.

Research target: Physics
Language: English
Full text
DOI
Text on another site
Keywords: superconductivityсверхпроводимостьferromagnetismферромагнетизмsuperconducting hybrid structuresсверхпроводящие гибридные структурыджозефсоновские структурыJosephson junctions
Publication based on the results of:
Modern problems in nanophysics and condensed-matter physics (2021)
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