{
  "id": "1207.3268",
  "version": "v1",
  "published": "2012-07-13T14:55:46.000Z",
  "updated": "2012-07-13T14:55:46.000Z",
  "title": "A many-body overview of low-energy optical excitations in armchair graphene nanoribbons",
  "authors": [
    "Jessica Alfonsi"
  ],
  "comment": "14 pages, 5 figures",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.mtrl-sci",
    "cond-mat.str-el"
  ],
  "abstract": "Excitonic spectra of armchair graphene nanoribbons (AGNRs) obtained from a full many-body exact diagonalization of the Hubbard model are reported for both longitudinally and transversely polarized photons, thus providing a complete survey of low-energy may-body optical excitations in these systems. The resulting one-photon allowed eigenstates turn out to be well separated in energy from each other but both couple to the same set of two-photon allowed states. The magnitude of the calculated optical oscillator strengths for perpendicular polarization suggest that these optical features can be indeed observed in polarized absorption measurements.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2012-07-13T14:55:46.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "armchair graphene nanoribbons",
      "low-energy optical excitations",
      "many-body overview",
      "full many-body exact diagonalization",
      "low-energy may-body optical excitations"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 14,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2012arXiv1207.3268A"
    }
  }
}