Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2004-04-08
Phys. Rev. B 70, 224520 (2004)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
8 pages, 7 figures, added references, typos added
Scientific paper
10.1103/PhysRevB.70.224520
The stationnary Josephson effect in a clean Superconductor-Ferromagnet-Superconductor junction is revisited for arbitrarily large spin polarizations. The quasiclassical calculation of the supercurrent assumes that the Andreev reflection is complete for all channels. However, De Jong and Beenakker have shown that the Andreev reflection at a clean FS interface is incomplete, due to the exchange interaction in the ferromagnet. Taking into account this incomplete Andreev reflection, we investigate the quasiparticle spectrum, the Josephson current and the $0-\pi$ transition in a ballistic single channel SFS junction. We find that energy gaps open in the phase dependent spectrum. Although the spectrum is strongly modified when the exchange energy increases, the Josephson current and the $0-\pi$ transition are only weakly affected by the incomplete Andreev reflection, except when the exchange energy is close to the Fermi energy.
Cayssol Jérôme
Montambaux Gilles
No associations
LandOfFree
Exchange induced ordinary reflection in a single-channel superconductor-ferromagnet-superconductor junction does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Exchange induced ordinary reflection in a single-channel superconductor-ferromagnet-superconductor junction, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Exchange induced ordinary reflection in a single-channel superconductor-ferromagnet-superconductor junction will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-158378