{
  "id": "1803.01771",
  "version": "v1",
  "published": "2018-03-05T16:53:01.000Z",
  "updated": "2018-03-05T16:53:01.000Z",
  "title": "Universal scaling laws in two-dimensional-material-based Schottky heterostructures",
  "authors": [
    "Yee Sin Ang",
    "Hui Ying Yang",
    "L. K. Ang"
  ],
  "comment": "6 pages, 2 figures",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.mtrl-sci",
    "physics.app-ph"
  ],
  "abstract": "We identify a new universality in the carrier transport of two-dimensional(2D)-material-based Schottky heterostructures. We show that the reversed saturation current ($\\mathcal{J}$) scales \\emph{universally} with temperature ($T$) as $ \\log(\\mathcal{J}/T^{\\beta}) \\propto -1/T$, with $\\beta = 3/2$ for lateral Schottky heterostructures and $\\beta = 1$ for vertical Schottky heterostructures, over a wide range of 2D systems including nonrelativistic electron gas, Rashba spintronic system, single and few-layer graphene, and thin-films of topological solids. Such universalities originate from the strong coupling between the thermionic process and the in-plane carrier dynamics. Our model resolves some of the conflicting results from prior works and is in agreement with recent experiments. The universal scaling laws signal the breakdown of $\\beta=2$ scaling in the classic diode equation widely-used over the past 60 years. Our findings shall provide a simple analytical scaling for the extraction of the Schottky barrier height in 2D-material-based heterostructure, thus paving way for both fundamental understanding of nanoscale interface physics and applied device engineering.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2018-03-05T16:53:01.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "two-dimensional-material-based schottky heterostructures",
      "schottky barrier height",
      "classic diode equation",
      "universal scaling laws signal",
      "in-plane carrier dynamics"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 6,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}