{
  "id": "cond-mat/9708164",
  "version": "v1",
  "published": "1997-08-21T13:11:53.000Z",
  "updated": "1997-08-21T13:11:53.000Z",
  "title": "Conductance Quantization and Electron Resonances in Sharp Tips and Atomic-Size Contacts",
  "authors": [
    "A. Levy Yeyati",
    "A. Martín-Rodero",
    "F. Flores"
  ],
  "comment": "4 pages, 3 postscript figures, to be published in Phys.Rev.B",
  "journal": "Phys. Rev. B 56, 10369 (1997)",
  "doi": "10.1103/PhysRevB.56.10369",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "The electronic and transport properties of atomic-size contacts are analyzed theoretically using a self-consistent tight-binding model. Our results show that, for s-like metals, a sufficiently narrow contact exhibits well defined resonant states at the Fermi energy, spatially localized in the neck region. These states are robust with respect to disorder and provide a simple explanation for the observed tendency to conductance quantization. It is also shown that these properties disappear for a sufficiently large contact area. The possible relevance of this resonant states in scanning tunneling spectroscopy using sharp tips is briefly analized.",
  "revisions": [
    {
      "version": "v1",
      "updated": "1997-08-21T13:11:53.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "conductance quantization",
      "sharp tips",
      "atomic-size contacts",
      "electron resonances",
      "resonant states"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. B"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 4,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}