{
  "id": "0709.1991",
  "version": "v1",
  "published": "2007-09-13T04:20:47.000Z",
  "updated": "2007-09-13T04:20:47.000Z",
  "title": "Dephasing in a quantum dot coupled to a quantum point contact",
  "authors": [
    "Tomosuke Aono"
  ],
  "comment": "4 pages, 2 figures",
  "doi": "10.1103/PhysRevB.77.081303",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "We investigate a dephasing mechanism in a quantum dot capacitively coupled to a quantum point contact. We use a model which was proposed to explain the 0.7 structure in point contacts, based on the presence of a quasi-bound state in a point contact. The dephasing rate is examined in terms of charge fluctuations of electrons in the bound state. We address a recent experiment by Avinun-Kalish {\\it et al.} [Phys. Rev. Lett. {\\bf 92}, 156801 (2004)], where a double peak structure appears in the suppressed conductance through the quantum dot. We show that the two conducting channels induced by the bound state are responsible for the peak structure.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2007-09-13T04:20:47.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "73.23.-b",
      "03.65.Yz",
      "72.15.Qm",
      "74.50.+r"
    ],
    "keywords": [
      "quantum point contact",
      "quantum dot",
      "double peak structure appears",
      "charge fluctuations",
      "quasi-bound state"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review B",
      "year": 2008,
      "month": "Feb",
      "volume": 77,
      "number": 8,
      "pages": "081303"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 4,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2008PhRvB..77h1303A"
    }
  }
}