Josephson effect in SIFS tunnel junctions with domain walls in weak link region

Bakurskiy, S.V.; Golubov, A.A.; Klenov, N.V.; Kupriyanov, M.Y.; Soloviev, I.I.

Статья опубликована в журнале из списка RSCI Web of Science
Статья опубликована в журнале из перечня ВАК
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 19 октября 2015 г.

Авторы: Bakurskiy S.V., Golubov A.A., Klenov N.V., Kupriyanov M.Yu, Soloviev I.I.
Журнал: Письма в "Журнал экспериментальной и теоретической физики"
Том: 101
Номер: 11
Год издания: 2015
Первая страница: 863
Последняя страница: 868
DOI: 10.7868/S0370274X15110090
Аннотация: We study theoretically the properties of SIFS type Josephson junctions composed of two superconducting (S) electrodes separated by an insulating layer (I) and a ferromagnetic (F) film consisting of periodic magnetic domains structure with antiparallel magnetization directions in neighboring domains. The two-dimensional problem in the weak link area is solved analytically in the framework of the linearized quasiclassical Usadel equations. Based on this solution, the spatial distributions of the critical current density, JC, in the domains and critical current, IC, of SIFS structures are calculated as a function of domain wall parameters, as well as the thickness, dF , and the width, W, of the domains. We demonstrate that IC(dF,W) dependencies exhibit damped oscillations with the ratio of the decay length, ξ1, and oscillation period, ξ2, being a function of the parameters of the domains, and this ratio may take any value from zero to unity. Thus, we propose a new physical mechanism that may explain the essential difference between ξ1 and ξ2 observed experimentally in various types of SFS Josephson junctions.
Добавил в систему: Куприянов Михаил Юрьевич

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Josephson effect in SIFS tunnel junctions with domain walls in weak link regionстатья

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