{
  "id": "cond-mat/0403534",
  "version": "v3",
  "published": "2004-03-22T17:38:35.000Z",
  "updated": "2004-11-19T11:09:01.000Z",
  "title": "Spin polarization of electrons with Rashba double-refraction",
  "authors": [
    "V. Marigliano Ramaglia",
    "D. Bercioux",
    "V. Cataudella",
    "G. De Filippis",
    "C. A. Perroni"
  ],
  "comment": "12 pages with 7 figures",
  "journal": "J. Phys.: Condens. Matter 16 (2004) 9143-9154",
  "doi": "10.1088/0953-8984/16/50/005",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.mtrl-sci"
  ],
  "abstract": "We demonstrate how the Rashba spin-orbit coupling in semiconductor heterostructures can produce and control a spin-polarized current without ferromagnetic leads. Key idea is to use spin-double refraction of an electronic beam with a nonzero incidence angle. A region where the spin-orbit coupling is present separates the source and the drain without spin-orbit coupling. We show how the transmission and the beam spin-polarization critically depend on the incidence angle. The transmission halves when the incidence angle is greater than a limit angle and a significant spin-polarization appears. Increasing the spin-orbit coupling one can obtain the modulation of the intensity and of the spin-polarization of the output electronic current when the input current is unpolarized. Our analysis shows the possibility to realize a spin-field-effect transistor based on the propagation of only one mode with the region with spin-orbit coupling. Where the original Datta and Das device [Appl.Phys.Lett. {\\bf 56}, 665 (1990)] use the spin-precession that originates from the interference between two modes with orthogonal spin.",
  "revisions": [
    {
      "version": "v3",
      "updated": "2004-11-19T11:09:01.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "spin polarization",
      "rashba double-refraction",
      "spin-orbit coupling",
      "significant spin-polarization appears",
      "nonzero incidence angle"
    ],
    "tags": [
      "journal article"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 12,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}