{
  "id": "cond-mat/0308564",
  "version": "v2",
  "published": "2003-08-27T08:26:08.000Z",
  "updated": "2004-03-19T12:10:59.000Z",
  "title": "Positive cross-correlations in a three-terminal quantum dot with ferromagnetic contacts",
  "authors": [
    "A. Cottet",
    "W. Belzig",
    "C. Bruder"
  ],
  "comment": "4 pages, 4 figures, to appear in Phys. Rev. Lett",
  "journal": "Phys. Rev. Lett 92, 206801 (2004)",
  "doi": "10.1103/PhysRevLett.92.206801",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "We study current fluctuations in an interacting three-terminal quantum dot with ferromagnetic leads. For appropriately polarized contacts, the transport through the dot is governed by a novel dynamical spin blockade, i.e., a spin-dependent bunching of tunneling events not present in the paramagnetic case. This leads for instance to positive zero-frequency cross-correlations of the currents in the output leads even in the absence of spin accumulation on the dot. We include the influence of spin-flip scattering and identify favorable conditions for the experimental observation of this effect with respect to polarization of the contacts and tunneling rates.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2004-03-19T12:10:59.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "ferromagnetic contacts",
      "positive cross-correlations",
      "study current fluctuations",
      "interacting three-terminal quantum dot",
      "novel dynamical spin blockade"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. Lett."
    },
    "note": {
      "typesetting": "TeX",
      "pages": 4,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}