{
  "id": "0804.3637",
  "version": "v3",
  "published": "2008-04-23T03:51:18.000Z",
  "updated": "2008-12-02T03:54:02.000Z",
  "title": "Alkanethiol-Based Single-Molecule Transistors",
  "authors": [
    "Chun-Lan Ma",
    "Diu Nghiem",
    "Yu-Chang Chen"
  ],
  "comment": "4 pages",
  "journal": "Applied Physics Letters, 93 222111 (2008)",
  "doi": "10.1063/1.3043438",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.mtrl-sci"
  ],
  "abstract": "The transport properties of unsubstituted and amino-substituted butanethiol molecules sandwiched between Au electrodes are investigated by using first-principles approaches. New states are observed around the Fermi levels when -NH2 is substituted for -H in the bridging butanethiol. The amino-substituted states lead to a sharp increase of the current which is credited to the resonant tunneling in the junction. We observe a novel conductance peak at VSD = 0.1 V and negative differential resistance (NDR) in a certain range of source-drain bias. In addition to the I-VSD characteristics, we also investigate the current as a function of gate voltage (I-VG) and find that, for a fixed source-drain bias (VSD = 0.01 V), the gate voltage can modulate the conductance by up to 30 times in the amino-substituted butanethiol junction. These I-VG characteristics suggest that the amino-substituted butanethiol molecular junction may be a promising candidate for field-effect transistors.",
  "revisions": [
    {
      "version": "v3",
      "updated": "2008-12-02T03:54:02.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "85.30.Tv",
      "71.15.-m",
      "71.20.Rv"
    ],
    "keywords": [
      "alkanethiol-based single-molecule transistors",
      "gate voltage",
      "amino-substituted butanethiol molecular junction",
      "novel conductance peak",
      "butanethiol molecules"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "AIP",
      "journal": "Applied Physics Letters",
      "year": 2008,
      "month": "Dec",
      "volume": 93,
      "number": 22,
      "pages": 222111
    },
    "note": {
      "typesetting": "TeX",
      "pages": 4,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2008ApPhL..93v2111M"
    }
  }
}