{
  "id": "1009.6037",
  "version": "v1",
  "published": "2010-09-30T04:39:24.000Z",
  "updated": "2010-09-30T04:39:24.000Z",
  "title": "Real-Time Imaging of K atoms on Graphite: Interactions and Diffusion",
  "authors": [
    "J. Renard",
    "M. B. Lundeberg",
    "J. A. Folk",
    "Y. Pennec"
  ],
  "journal": "Phys. Rev. Lett. 106, 156101 (2011)",
  "doi": "10.1103/PhysRevLett.106.156101",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "Scanning tunneling microscopy (STM) at liquid helium temperature is used to image potassium adsorbed on graphite at low coverage (~0.02 monolayer). Single atoms appear as protrusions on STM topographs. A statistical analysis of the position of the atoms demonstrates repulsion between adsorbates, which is quantified by comparison with molecular dynamics simulations. This gives access to the dipole moment of a single adsorbate, found to be 10.5 Debye. Time lapse imaging shows that long range order is broken by thermally activated diffusion, with a 32 meV barrier to hopping between graphite lattice sites.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2010-09-30T04:39:24.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "68.43.Fg",
      "68.37.Ef",
      "68.43.Jk"
    ],
    "keywords": [
      "real-time imaging",
      "interactions",
      "graphite lattice sites",
      "atoms demonstrates repulsion",
      "liquid helium temperature"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review Letters",
      "year": 2011,
      "month": "Apr",
      "volume": 106,
      "number": 15,
      "pages": 156101
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2011PhRvL.106o6101R"
    }
  }
}