Josephson current in a superconductor -- ferromagnet -- superconductor junction with in-plane ferromagnetic domains

Details Josephson current in a superconductor -- ferromagnet -- superconductor junction with in-plane ferromagnetic domains Josephson current in a superconductor -- ferromagnet -- superconductor junction with in-plane ferromagnetic domains

2007-06-12

arxiv.org/abs/0706.1638v1

Phys. Rev. B 76, 134502 (2007)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

9 pages, 6 figures

Scientific paper

10.1103/PhysRevB.76.134502

We study a diffusive superconductor--ferromagnet--superconductor (SFS) junction with in-plane ferromagnetic domains. Close to the superconducting transition temperature, we describe the proximity effect in the junction with the linearized Usadel equations. We find that properties of such a junction depend on the size of the domains relative to the magnetic coherence length. In the case of large domains, the junction exhibits transitions to the $\pi$ state, similarly to a single-domain SFS junction. In the case of small domains, the magnetization effectively averages out, and the junction is always in the zero state, similarly to a superconductor--normal metal--superconductor (SNS) junction. In both those regimes, the influence of domain walls may be approximately described as an effective spin-flip scattering. We also study the inhomogeneous distribution of the local current density in the junction. Close to the 0--$\pi$ transitions, the directions of the critical current may be opposite in the vicinity of the domain wall and in the middle of the domains.

Affiliated with

Also associated with

No associations

Rating

Josephson current in a superconductor -- ferromagnet -- superconductor junction with in-plane ferromagnetic domains 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 Josephson current in a superconductor -- ferromagnet -- superconductor junction with in-plane ferromagnetic domains, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Josephson current in a superconductor -- ferromagnet -- superconductor junction with in-plane ferromagnetic domains will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-359290