Enhancement of the Josephson Current by an Exchange Field in Superconductor-Ferromagnet Structures
F. S. Bergeret, A. F. Volkov, K. B. Efetov
DOI 10.1103/PhysRevLett.86.3140 · Physical Review Letters
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
We calculate the dc Josephson current for two superconductor/ferromagnet (S/F) bilayers separated by a thin insulating film. It is demonstrated that the critical Josephson current Ic in the junction strongly depends on the relative orientation of the effective exchange field h of the bilayers. We found that in the case of an antiparallel orientation Ic increases at low temperatures with increasing h and at zero temperature has a singularity when h equals the superconducting gap Δ. This striking behavior contrasts with the suppression of the critical current by the magnetic moments aligned in parallel and is an interesting new effect of the interplay between superconductors and ferromagnets.
Similar papers
Magnetic exchange interaction induced by a Josephson current
similarity 0.92Xavier Waintal & Piet W. Brouwer
Source status unknown — claims are unverified
Enhancement of the Josephson current by an exchange field in superconductor-ferromagnet structures
similarity 0.91F. S. Bergeret et al. · 2001 · arXiv:cond-mat/0102012
Source status unknown — claims are unverified
Nonequilibrium transport in superconductor/ferromagnet/superconductor diffusive junctions: Interplay between proximity effect and ferromagnetism
similarity 0.90I. V. Bobkova & A. M. Bobkov
Source status unknown — claims are unverified
Odd spin-triplet superconductivity in a multilayered superconductor-ferromagnet Josephson junction
similarity 0.90A. F. Volkov & K. B. Efetov
Source status unknown — claims are unverified
Spin polarization and orbital effects in superconductor-ferromagnet structures
similarity 0.90A. F. Volkov et al.
Source status unknown — claims are unverified
Electrical response of superconductor/ferromagnet/topological-insulator/superconductor junctions to magnetic texture dynamics
similarity 0.90D. S. Rabinovich et al.
Source status unknown — claims are unverified