Peculiar properties of the Josephson junction at the transition from 0 to Pi state
BUZDIN, Alexandre I.
Institut universitaire de France [IUF]
Centre de physique moléculaire optique et hertzienne [CPMOH]
Institut universitaire de France [IUF]
Centre de physique moléculaire optique et hertzienne [CPMOH]
BUZDIN, Alexandre I.
Institut universitaire de France [IUF]
Centre de physique moléculaire optique et hertzienne [CPMOH]
< Réduire
Institut universitaire de France [IUF]
Centre de physique moléculaire optique et hertzienne [CPMOH]
Langue
en
Article de revue
Ce document a été publié dans
Physical Review B: Condensed Matter and Materials Physics (1998-2015). 2005-09-01, vol. 72, n° 10, p. 100501 (1-4)
American Physical Society
Résumé en anglais
It is demonstrated that in the diffusive superconductor-ferromagnet-superconductor (S/F/S) junctions the current-phase relation is practically sinusoidal everywhere except in a narrow region near the 0-Pi transition. In ...Lire la suite >
It is demonstrated that in the diffusive superconductor-ferromagnet-superconductor (S/F/S) junctions the current-phase relation is practically sinusoidal everywhere except in a narrow region near the 0-Pi transition. In this region the second harmonic dominates the scenario of the 0-Pi transition. We predict a first order transition for the S/F/S junctions with a homogeneous F barrier. However, in real junctions a small modulation of the thickness of the barrier may favor the continious 0-Pi transition and the realisation of the Josephson junction with an arbitrary ground state phase difference. The performed calculations of the second harmonic amplitude provide a natural explanation of the recent contradictory results on the second harmonic measurements.< Réduire
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