{
  "id": "cond-mat/0406076",
  "version": "v1",
  "published": "2004-06-03T09:20:41.000Z",
  "updated": "2004-06-03T09:20:41.000Z",
  "title": "A Circuit Model for Domain Walls in Ferromagnetic Nanowires: Application to Conductance and Spin Transfer Torques",
  "authors": [
    "Peter E. Falloon",
    "Rodolfo A. Jalabert",
    "Dietmar Weinmann",
    "Robert L. Stamps"
  ],
  "comment": "10 pages, 5 figures; submitted to Physical Review B",
  "journal": "Phys. Rev. B 70, 174424 (2004)",
  "doi": "10.1103/PhysRevB.70.174424",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "We present a circuit model to describe the electron transport through a domain wall in a ferromagnetic nanowire. The domain wall is treated as a coherent 4-terminal device with incoming and outgoing channels of spin up and down and the spin-dependent scattering in the vicinity of the wall is modelled using classical resistances. We derive the conductance of the circuit in terms of general conductance parameters for a domain wall. We then calculate these conductance parameters for the case of ballistic transport through the domain wall, and obtain a simple formula for the domain wall magnetoresistance which gives a result consistent with recent experiments. The spin transfer torque exerted on a domain wall by a spin-polarized current is calculated using the circuit model and an estimate of the speed of the resulting wall motion is made.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2004-06-03T09:20:41.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "spin transfer torque",
      "circuit model",
      "ferromagnetic nanowire",
      "application",
      "general conductance parameters"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. B"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 10,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}