2001/08/31 by N. M. Chtchelkatchev, Wolfgang Belzig, W. Belzig +4 · 4 citations
Engineering · Physics and Astronomy · #Magneto-Optical Properties and Applications #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #cond-mat.mes-hall
paper · pdf · doi:10.1134/1.1421408
published as JETP Lett, Vol. 74, 323 (2001) [Pis'ma v Zh. Eksp. i Teor. Fiz. Vol. 74, 357 (2001)] · 4 pages, 4 figures
openalex publication_date 2001/09/01 · arxiv created 2002/02/27 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/04
Superconductor-Ferromagnetic-Superconductor (SFS) Josephson junctions are known to exhibit a transition between π and 0 states. In this note we find the π-0 phase diagram of an SFS junction depending on the transparency of an intermediate insulating layer (I). We show that in general, the Josephson critical current is nonzero at the π-0 transition temperature. Contributions to the current from the two spin channels nearly compensate each other and the first harmonic of the Josephson current as a function of phase difference is suppressed. However, higher harmonics give a nonzero contribution to the supercurrent.