Mechanisms of 0-pi transition and current-phase relations in SFS Josephson junctions

Авторы: Golubov A.A., Kupriyanov M.Y., Fominov Y.V.
Сборник: TOWARDS THE CONTROLLABLE QUANTUM STATES: MESOSCOPIC SUPERCONDUCTIVITY AND SPINTRONICS
Год издания: 2003
Место издания: WORLD SCIENTIFIC PUBL CO PTE LTD PO BOX 128 FARRER RD, SINGAPORE 9128, SINGAPORE
Первая страница: 137
Последняя страница: 142
DOI: 10.1142/9789812705556\_0023
Аннотация: Quantitative theory of the Josephson effect in SFIFS junctions (S denotes bulk superconductor, F - metallic ferromagnet, I - insulating barrier) is presented in the dirty limit. Fully self-consistent numerical procedure is employed to solve the Usadel equations at arbitrary values of the F-layers thicknesses, magnetizations, and interface parameters. Various types of the current-phase relation I(psi) in superconductor-ferromagnet-superconductor (SFS) point contacts and planar double-barrier junctions are studied within the quasiclassical theory in the limit of thin diffusive ferromagnetic interlayers. The physical mechanisms leading to highly nontrivial I(W) dependence are identified by studying the spectral supercurrent density. These mechanisms are also responsible for the 0-pi transition in SFS Josephson junctions.
Добавил в систему: Куприянов Михаил Юрьевич

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