{
  "id": "0911.3201",
  "version": "v2",
  "published": "2009-11-17T01:46:17.000Z",
  "updated": "2010-06-15T10:44:30.000Z",
  "title": "Quantum Coherence at Low Temperatures in Mesoscopic Systems: Effect of Disorder",
  "authors": [
    "Yasuhiro Niimi",
    "Yannick Baines",
    "Thibaut Capron",
    "Dominique Mailly",
    "Fang-Yuh Lo",
    "Andreas D. Wieck",
    "Tristan Meunier",
    "Laurent Saminadayar",
    "Christopher Bauerle"
  ],
  "comment": "21 pages, 30 figures",
  "journal": "Phys. Rev. B 81, 245306 (2010)",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "We study the disorder dependence of the phase coherence time of quasi one-dimensional wires and two-dimensional (2D) Hall bars fabricated from a high mobility GaAs/AlGaAs heterostructure. Using an original ion implantation technique, we can tune the intrinsic disorder felt by the 2D electron gas and continuously vary the system from the semi-ballistic regime to the localized one. In the diffusive regime, the phase coherence time follows a power law as a function of diffusion coefficient as expected in the Fermi liquid theory, without any sign of low temperature saturation. Surprisingly, in the semi-ballistic regime, it becomes independent of the diffusion coefficient. In the strongly localized regime we find a diverging phase coherence time with decreasing temperature, however, with a smaller exponent compared to the weakly localized regime.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2010-06-15T10:44:30.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "73.23.-b",
      "73.63.Nm",
      "03.65.Yz",
      "73.20.Fz"
    ],
    "keywords": [
      "low temperature",
      "phase coherence time",
      "quantum coherence",
      "mesoscopic systems",
      "high mobility gaas/algaas heterostructure"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review B",
      "doi": "10.1103/PhysRevB.81.245306",
      "year": 2010,
      "month": "Jun",
      "volume": 81,
      "number": 24,
      "pages": 245306
    },
    "note": {
      "typesetting": "TeX",
      "pages": 21,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2010PhRvB..81x5306N"
    }
  }
}