Enhanced Supercurrents in Josephson Junctions Containing Nonparallel Ferromagnetic Domains
BUZDIN, Alexandre I.
Centre de physique moléculaire optique et hertzienne [CPMOH]
Institut universitaire de France [IUF]
See more >
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]
< Reduce
Centre de physique moléculaire optique et hertzienne [CPMOH]
Institut universitaire de France [IUF]
Language
en
Article de revue
This item was published in
Physical Review Letters. 2010-05-21, vol. 104, n° 20, p. 207001 (1-4)
American Physical Society
English Abstract
\pi coupling may arise when a ferromagnet forms a link between two superconductors of an artificial Josephson junction. Using a trilayer Fe=Cr=Fe barrier in which the Cr thickness determines the alignment of the Fe layers, ...Read more >
\pi coupling may arise when a ferromagnet forms a link between two superconductors of an artificial Josephson junction. Using a trilayer Fe=Cr=Fe barrier in which the Cr thickness determines the alignment of the Fe layers, we show that the critical currents are substantially enhanced in the antiparallel configuration. The result agrees with existing superconductor ferromagnet proximity theory according to which the phase-controlling effects of ferromagnets on Cooper pairs can be minimized by arranging their moments in a nonparallel way [Bergeret et al., Phys. Rev. Lett. 86, 3140 (2001); Blanter et al., Phys. Rev. B 69, 024525 (2004)].Read less <
Origin
Hal imported