{
  "id": "0809.1381",
  "version": "v3",
  "published": "2008-09-08T16:41:48.000Z",
  "updated": "2009-06-03T07:30:57.000Z",
  "title": "Effect of Disorder on the Quantum Coherence in Mesoscopic Wires",
  "authors": [
    "Y. Niimi",
    "Y. Baines",
    "T. Capron",
    "D. Mailly",
    "F. -Y. Lo",
    "A. D. Wieck",
    "T. Meunier",
    "L. Saminadayar",
    "C. Bauerle"
  ],
  "comment": "4 pages, 4 figures",
  "journal": "Phys. Rev. Lett. 102, 226801 (2009)",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "We present phase coherence time measurements in quasi-one-dimensional mesoscopic wires made from high mobility two-dimensional electron gas. By implanting gallium ions into a GaAs/AlGaAs heterojunction we are able to vary the diffusion coefficient over 2 orders of magnitude. We show that in the diffusive limit, the decoherence time follows a power law as a function of diffusion coefficient as expected by theory. When the disorder is low enough so that the samples are semi-ballistic, we observe a new and unexpected regime in which the phase coherence time is independent of disorder. In addition, for all samples the temperature dependence of the phase coherence time follows a power law down to the lowest temperatures without any sign of saturation and strongly suggests that the frequently observed low temperature saturation is not intrinsic.",
  "revisions": [
    {
      "version": "v3",
      "updated": "2009-06-03T07:30:57.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "73.23.-b",
      "73.63.Nm",
      "03.65.Yz"
    ],
    "keywords": [
      "quantum coherence",
      "high mobility two-dimensional electron gas",
      "phase coherence time measurements",
      "power law",
      "diffusion coefficient"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review Letters",
      "doi": "10.1103/PhysRevLett.102.226801",
      "year": 2009,
      "month": "Jun",
      "volume": 102,
      "number": 22,
      "pages": 226801
    },
    "note": {
      "typesetting": "TeX",
      "pages": 4,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2009PhRvL.102v6801N"
    }
  }
}