{
  "id": "cond-mat/0005522",
  "version": "v1",
  "published": "2000-05-30T14:56:12.000Z",
  "updated": "2000-05-30T14:56:12.000Z",
  "title": "Comment on \"Spin relaxation in quantum Hall systems\"",
  "authors": [
    "Alexander V. Khaetskii"
  ],
  "comment": "1 page",
  "doi": "10.1103/PhysRevLett.87.049701",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "W. Apel and Yu.A. Bychkov have recently considered the spin relaxation in a 2D quantum Hall system for the filling factor close to unity [PRL v.82, 3324 (1999)]. The authors considered only one spin flip mechanism (direct spin-phonon coupling) among several possible spin-orbit related ones and came to the conclusion that the spin relaxation time due to this mechanism is quite short: around $10^{-10}$ s at B=10 T (for GaAs). This time is much shorter than the typical time ($10^{-5}$ s) obtained earlier by D. Frenkel while considering the spin relaxation of 2D electrons in a quantizing magnetic field without the Coulomb interaction and for the same spin-phonon coupling. I show that the authors' conclusion about the value of the spin-flip time is wrong and have deduced the correct time which is by several orders of magnitude longer. I also discuss the admixture mechanism of the spin-orbit interaction.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2000-05-30T14:56:12.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "2d quantum hall system",
      "spin flip mechanism",
      "spin relaxation time",
      "spin-flip time",
      "filling factor close"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. Lett."
    },
    "note": {
      "typesetting": "TeX",
      "pages": 1,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}