{
  "id": "0910.5825",
  "version": "v1",
  "published": "2009-10-30T09:43:49.000Z",
  "updated": "2009-10-30T09:43:49.000Z",
  "title": "Resolving chemical structures in scanning tunnelling microscopy",
  "authors": [
    "C. Weiss",
    "C. Wagner",
    "C. Kleimann",
    "F. S. Tautz",
    "R. Temirov"
  ],
  "comment": "Main text: 14 pages including references and captions, 4 figures. Supplementary information: 1 pages including 2 figures",
  "doi": "10.1016/j.progsurf.2012.05.002",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "With the invention of scanning probe techniques, direct imaging of single atoms and molecules became possible. Today, scanning tunnelling microscopy (STM) routinely provides angstrom-scale image resolution. At the same time, however, STM images suffer from a serious drawback - the absence of chemical information. Here we demonstrate a modification of STM that resolves the chemical structure of molecular adsorbates. The key to the new STM mode is a combined force sensor and signal transducer that is formed within the tunnelling junction when a suitable gas condenses there. The method probes the repulsive branch of the surface adsorption potential and transforms the force signal into a current. Obtained images achieve the same resolution as state-of-the-art atomic force microscopy (AFM). In contrast to AFM, however, our (uncalibrated) force sensor is of nanoscale dimensions and therefore intrinsically insensitive to those long-range interactions that make atomic-resolution AFM so demanding.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2009-10-30T09:43:49.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "scanning tunnelling microscopy",
      "resolving chemical structures",
      "state-of-the-art atomic force microscopy",
      "force sensor",
      "stm images suffer"
    ],
    "tags": [
      "journal article"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 14,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2009arXiv0910.5825W"
    }
  }
}