{
  "id": "0906.4405",
  "version": "v2",
  "published": "2009-06-24T06:29:59.000Z",
  "updated": "2009-12-31T11:01:03.000Z",
  "title": "Tuning of electron transport through a quantum wire: An exact study",
  "authors": [
    "Santanu K. Maiti"
  ],
  "comment": "9 pages, 7 figures",
  "journal": "Journal of Computational and Theoretical Nanoscience, Volume 6, Number 3, March 2009, pp. 710-716(7)",
  "doi": "10.1166/jctn.2009.1098",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.mtrl-sci"
  ],
  "abstract": "We explore electron transport properties in a quantum wire attached to two metallic electrodes. A simple tight-binding model is used to describe the system and the coupling of the wire to the electrodes (source and drain) is treated through Newns-Anderson chemisorption theory. In our present model, the site energies of the wire are characterized by the relation $\\epsilon_i=W\\cos(i \\lambda^{\\nu}\\pi)$ where $W$, $\\lambda$, $\\nu$ are three positive numbers. For $\\nu=0$, the threshold bias voltage of electron conduction across the bridge can be controlled very nicely by tuning the strength of the potential $W$. On the other hand, for $\\nu \\ne 0$, the wire becomes an aperiodic one and quite interestingly we see that, for some special values of $\\nu$, the system exhibits a {\\em metal-insulator} transition which provides a significant feature in this particular study. Our numerical results may be useful for fabrication of efficient switching devices.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2009-12-31T11:01:03.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "quantum wire",
      "exact study",
      "newns-anderson chemisorption theory",
      "electron transport properties",
      "threshold bias voltage"
    ],
    "tags": [
      "journal article"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 9,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2009arXiv0906.4405M"
    }
  }
}