{
  "id": "0706.1638",
  "version": "v1",
  "published": "2007-06-12T09:29:23.000Z",
  "updated": "2007-06-12T09:29:23.000Z",
  "title": "Josephson current in a superconductor -- ferromagnet -- superconductor junction with in-plane ferromagnetic domains",
  "authors": [
    "B. Crouzy",
    "S. Tollis",
    "D. A. Ivanov"
  ],
  "comment": "9 pages, 6 figures",
  "journal": "Phys. Rev. B 76, 134502 (2007)",
  "doi": "10.1103/PhysRevB.76.134502",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.supr-con"
  ],
  "abstract": "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.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2007-06-12T09:29:23.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "74.50.+r",
      "74.45.+c",
      "74.78.Fk",
      "74.78.Na"
    ],
    "keywords": [
      "in-plane ferromagnetic domains",
      "josephson current",
      "superconductor junction",
      "domain wall",
      "local current density"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review B",
      "year": 2007,
      "month": "Oct",
      "volume": 76,
      "number": 13,
      "pages": 134502
    },
    "note": {
      "typesetting": "TeX",
      "pages": 9,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2007PhRvB..76m4502C"
    }
  }
}