{
  "id": "0907.3322",
  "version": "v1",
  "published": "2009-07-19T22:38:24.000Z",
  "updated": "2009-07-19T22:38:24.000Z",
  "title": "Observation of the Kohn anomaly near the K point of bilayer graphene",
  "authors": [
    "D. L. Mafra",
    "L. M. Malard",
    "S. K. Doorn",
    "H. Htoon",
    "J. Nilsson",
    "A. H. Castro Neto",
    "M. A. Pimenta"
  ],
  "comment": "4 pages, 4 figures",
  "journal": "Phys. Rev. B 80, 241414(R) (2009)",
  "doi": "10.1103/PhysRevB.80.241414",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "The dispersion of electrons and phonons near the K point of bilayer graphene was investigated in a resonant Raman study using different laser excitation energies in the near infrared and visible range. The electronic structure was analyzed within the tight-binding approximation, and the Slonczewski-Weiss-McClure (SWM) parameters were obtained from the analysis of the dispersive behavior of the Raman features. A softening of the phonon branches was observed near the K point, and results evidence the Kohn anomaly and the importance of considering electron-phonon and electron-electron interactions to correctly describe the phonon dispersion in graphene systems.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2009-07-19T22:38:24.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "63.20.D-",
      "63.20.kd",
      "78.30.Na"
    ],
    "keywords": [
      "bilayer graphene",
      "kohn anomaly",
      "observation",
      "resonant raman study",
      "laser excitation energies"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review B",
      "year": 2009,
      "month": "Dec",
      "volume": 80,
      "number": 24,
      "pages": 241414
    },
    "note": {
      "typesetting": "TeX",
      "pages": 4,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2009PhRvB..80x1414M"
    }
  }
}