{
  "id": "1012.4952",
  "version": "v1",
  "published": "2010-12-22T12:17:16.000Z",
  "updated": "2010-12-22T12:17:16.000Z",
  "title": "Non-adiabatic generation of a pure spin current in a 1D quantum ring with spin-orbit interaction",
  "authors": [
    "Marian Nita",
    "D. C. Marinescu",
    "Andrei Manolescu",
    "Vidar Gudmundsson"
  ],
  "comment": "8 pages, 5 figures",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "We demonstrate the theoretical possibility of obtaining a pure spin current in a 1D ring with spin-orbit interaction by irradiation with a non-adiabatic, two-component terahertz laser pulse, whose spatial asymmetry is reflected by an internal dephasing angle $\\phi$. The stationary solutions of the equation of motion for the density operator are obtained for a spin-orbit coupling linear in the electron momentum (Rashba) and used to calculate the time-dependent charge and spin currents. We find that there are critical values of $\\phi$ at which the charge current disappears, while the spin current reaches a maximum or a minimum value.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2010-12-22T12:17:16.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "73.23.Ra",
      "71.70.Ej",
      "72.25.Dc",
      "73.21.Hb"
    ],
    "keywords": [
      "pure spin current",
      "spin-orbit interaction",
      "1d quantum ring",
      "non-adiabatic generation",
      "two-component terahertz laser pulse"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1103/PhysRevB.83.155427",
      "journal": "Physical Review B",
      "year": 2011,
      "month": "Apr",
      "volume": 83,
      "number": 15,
      "pages": 155427
    },
    "note": {
      "typesetting": "TeX",
      "pages": 8,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2011PhRvB..83o5427N"
    }
  }
}