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Article Dans Une Revue Physical Review B: Condensed Matter and Materials Physics (1998-2015) Année : 2008

Nonsinusoidal current-phase relation in strongly ferromagnetic and moderately disordered SFS junctions

Résumé

We study the Josephson current in a junction comprising two superconductors linked by a strong ferromagnet in presence of impurities. We focus on a regime where the electron (and hole) motion is ballistic over the exchange length and diffusive on the scale of the weak link length. The first and the second harmonics of the current-phase relation are obtained for both two- and three dimensional ferromagnetic weak links. In the clean limit, the possibility of temperature-induced 0- transitions is demonstrated while the corresponding critical current versus temperature dependences are also studied.
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hal-00333836 , version 1 (24-10-2008)

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François Konschelle, Jérôme Cayssol, Alexandre I. Buzdin. Nonsinusoidal current-phase relation in strongly ferromagnetic and moderately disordered SFS junctions. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2008, 78 (13), pp.134505. ⟨10.1103/PhysRevB.78.134505⟩. ⟨hal-00333836⟩

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