Аннотация:
We study the spatial distribution of supercurrent circulated around an Abrikosov vortex in an SF bilayer in perpendicular magnetic field. Within the dirty limit regime and circular cell approximation for the vortex lattice, we derive the conditions when the Usadel equations the F-layer can be solved analytically. Using the obtained solutions, we demonstrate the possibility of reversal of direction of proximity induced supercurrents around the vortex in the F-layer compared to that in the S-layer. The direction of currents can be controlled either by varying transparency of the SF interface or by changing an exchange field in a ferromagnet. We argue that the origin of this effect is due the phase shift between singlet and triplet order parameter components induced in the F-layer. Possible ways of experimental detection of the predicted effect are discussed.
The developed numerical algorithms and corresponding calculations presented in Fig. 1 were supported by the Project # 15-12-30030 from Russian Science Foundation. This work was also supported in part by the Ministry of Education and Science of the Russian Federation in the framework of Increase Competitiveness Program of NUST “MISiS” (research project # К2-2016-051).
Поступила в редакцию: 18.10.2016 Исправленный вариант: 02.11.2016
Образец цитирования:
A. A. Golubov, M. Yu. Kupriyanov, M. M. Khapaev, “Abrikosov vortices in SF bilayers”, Письма в ЖЭТФ, 104:12 (2016), 862–863; JETP Letters, 104:12 (2016), 847–851
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