{
  "id": "1711.08691",
  "version": "v1",
  "published": "2017-11-23T13:49:15.000Z",
  "updated": "2017-11-23T13:49:15.000Z",
  "title": "Phonon Sidebands in Transition Metal Dichalcogenides",
  "authors": [
    "Dominik Christiansen",
    "Malte Selig",
    "Gunnar Berghäuser",
    "Robert Schmidt",
    "Iris Niehues",
    "Robert Schneider",
    "Ashish Arora",
    "Steffen Michaelis de Vasconcellos",
    "Rudolf Bratschitsch",
    "Ermin Malic",
    "Andreas Knorr"
  ],
  "journal": "D. Christiansen et. al., Phys. Rev. Lett. 119, 187402 (2017)",
  "doi": "10.1103/PhysRevLett.119.187402",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "Excitons dominate the optical properties of monolayer transition metal dichalcogenides (TMDs). Besides optically accessible bright exciton states, TMDs exhibit also a multitude of optically forbidden dark excitons. Here, we show that efficient exciton-phonon scattering couples bright and dark states and gives rise to an asymmetric excitonic line shape. The observed asymmetry can be traced back to phonon-induced sidebands that are accompanied by a polaron redshift. We present a joint theory-experiment study investigating the microscopic origin of these sidebands in different TMD materials taking into account intra- and intervalley scattering channels opened by optical and acoustic phonons. The gained insights contribute to a better understanding of the optical fingerprint of these technologically promising nanomaterials.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2017-11-23T13:49:15.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "phonon sidebands",
      "accessible bright exciton states",
      "efficient exciton-phonon scattering couples bright",
      "monolayer transition metal dichalcogenides",
      "asymmetric excitonic line shape"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. Lett."
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}