{
  "id": "1603.06027",
  "version": "v1",
  "published": "2016-03-19T01:06:59.000Z",
  "updated": "2016-03-19T01:06:59.000Z",
  "title": "First-principles study of the terahertz third-order nonlinear response of metallic armchair graphene nanoribbons",
  "authors": [
    "Yichao Wang",
    "David R. Andersen"
  ],
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "We compute the terahertz third-order nonlinear conductance of metallic armchair graphene nanoribbons using time-dependent perturbation theory. Significant enhancement of the intrinsic nonlinear third-order conductance over the result for intrinsic 2D single-layer graphene is observed over a wide range of temperatures and sample geometries. We also investigate the nonlinear response of extrinsic metallic acGNR with |Ef| much smaller than 200 meV. We find that the third-order conductance exhibits a strong Fermi level dependence at low temperatures. A third-order critical field strength of between roughly 1 and 5 kV/m is computed for the nonlinear Kerr terms as a function of temperature. For the third-harmonic terms, the minimum critical field is computed to be around 5 kV/m.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2016-03-19T01:06:59.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "metallic armchair graphene nanoribbons",
      "terahertz third-order nonlinear response",
      "first-principles study",
      "terahertz third-order nonlinear conductance",
      "intrinsic 2d single-layer graphene"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2016arXiv160306027W"
    }
  }
}