{
  "id": "cond-mat/0311221",
  "version": "v3",
  "published": "2003-11-10T22:48:23.000Z",
  "updated": "2004-07-01T14:39:47.000Z",
  "title": "Drift-diffusion model for spin-polarized transport in a non-degenerate 2DEG controlled by a spin-orbit interaction",
  "authors": [
    "Semion Saikin"
  ],
  "comment": "16 pages, 3 figures",
  "journal": "J. Phys.: Condens. Matter 16, 5071-5081 (2004)",
  "doi": "10.1088/0953-8984/16/28/025",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "We apply the Wigner function formalism to derive drift-diffusion transport equations for spin-polarized electrons in a III-V semiconductor single quantum well. Electron spin dynamics is controlled by the linear in momentum spin-orbit interaction. In a studied transport regime an electron momentum scattering rate is appreciably faster than spin dynamics. A set of transport equations is defined in terms of a particle density, spin density, and respective fluxes. The developed model allows studying of coherent dynamics of a non-equilibrium spin polarization. As an example, we consider a stationary transport regime for a heterostructure grown along the (0, 0, 1) crystallographic direction. Due to the interplay of the Rashba and Dresselhaus spin-orbit terms spin dynamics strongly depends on a transport direction. The model is consistent with results of pulse-probe measurement of spin coherence in strained semiconductor layers. It can be useful for studying properties of spin-polarized transport and modeling of spintronic devices operating in the diffusive transport regime.",
  "revisions": [
    {
      "version": "v3",
      "updated": "2004-07-01T14:39:47.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "spin-orbit interaction",
      "non-degenerate 2deg",
      "spin-polarized transport",
      "drift-diffusion model",
      "spin dynamics strongly depends"
    ],
    "tags": [
      "journal article"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 16,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}