Nonsinusoidal current-phase relation in strongly ferromagnetic and moderately disordered SFS junctions
BUZDIN, Alexandre I.
Centre de physique moléculaire optique et hertzienne [CPMOH]
Institut universitaire de France [IUF]
Centre de physique moléculaire optique et hertzienne [CPMOH]
Institut universitaire de France [IUF]
BUZDIN, Alexandre I.
Centre de physique moléculaire optique et hertzienne [CPMOH]
Institut universitaire de France [IUF]
< Réduire
Centre de physique moléculaire optique et hertzienne [CPMOH]
Institut universitaire de France [IUF]
Langue
en
Article de revue
Ce document a été publié dans
Physical Review B: Condensed Matter and Materials Physics (1998-2015). 2008-10-07, vol. 78, n° 13, p. 134505
American Physical Society
Résumé en anglais
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 ...Lire la suite >
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.< Réduire
Mots clés
superconductor/ferromagnet/superconductor Josephson junction
Eilenberger equation
second harmonic
disorder
strong ferromagnet
Project ANR
Electronic EPR Source - ANR-07-NANO-0011
Origine
Importé de halUnités de recherche