{
  "id": "cond-mat/9910144",
  "version": "v1",
  "published": "1999-10-09T13:35:28.000Z",
  "updated": "1999-10-09T13:35:28.000Z",
  "title": "On the relationship between the noise-induced persistent current and dephasing rate",
  "authors": [
    "V. E. Kravtsov",
    "B. L. Altshuler"
  ],
  "comment": "4 pages, revtex",
  "journal": "Phys. Rev. Lett., 84 (2000) 3394",
  "doi": "10.1103/PhysRevLett.84.3394",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "AC noise in disordered conductors causes both dephasing of the electron wave functions and a DC current around a mesoscopic ring. We demonstrate that the dephasing rate tau_{\\phi}^{-1} in long wires and the DC current, induced by the same noise and averaged over an ensemble of small rings are connected. The ensemble-averaged h/2e flux harmonic <I> of the current and the dephasing rate caused by the same uniform in space high frequency AC field are related in a remarkably simple way: <I> tau_{\\phi}=C e. Here e is an electron charge, and the constant C depends on the Dyson symmetry class. For a pure potential disorder the current <I> is diamagnetic C = -(4/\\pi) and in the presence of strong spin-orbit scattering it is paramagnetic C =(2/\\pi). The relationship seems to agree reasonably with experiments. This suggests that the two puzzles: anomalously large persistent current [L.P.Levy et al., Phys.Rev.Lett., v.64, 2074 (1990)] and the low-temperature saturation of the dephasing [P.Mohanty et al., Phys.Rev.Lett., v.78, 3366 (1997)] may have a common solution.",
  "revisions": [
    {
      "version": "v1",
      "updated": "1999-10-09T13:35:28.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "noise-induced persistent current",
      "dephasing rate",
      "relationship",
      "space high frequency ac field",
      "dc current"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. Lett."
    },
    "note": {
      "typesetting": "RevTeX",
      "pages": 4,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}