{
  "id": "2304.07135",
  "version": "v1",
  "published": "2023-04-14T13:58:12.000Z",
  "updated": "2023-04-14T13:58:12.000Z",
  "title": "Exciton dynamics in CdTe/CdZnTe quantum well",
  "authors": [
    "A. V. Mikhailov",
    "A. S. Kurdyubov",
    "E. S. Khramtsov",
    "I. V. Ignatiev",
    "B. F. Gribakin",
    "S. Cronenberger",
    "D. Scalbert",
    "M. R. Vladimirova",
    "R. André"
  ],
  "comment": "8 pages, 3 figures",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "Exciton energy structure and population dynamics in a wide CdTe/CdZnTe quantum well are studied by spectrally-resolved pump-probe spectroscopy. Multiple excitonic resonances in reflectance spectra are observed and identified by solving numerically three-dimensional Schr\\\"odinger equation. The pump-probe reflectivity signal is shown to be dominated by the photoinduced nonradiative broadening of the excitonic resonances, while pump-induced exciton energy shift and reduction of the oscillator strength appear to be negligible. This broadening is induced by the reservoir of dark excitons with large in-plane wave vector, which are coupled to the the bright excitons states. The dynamics of the pump-induced nonradiative broadening observed experimentally is characterised by three components: signal build up on the scale of tens of picoseconds (i) and bi-exponential decay on the scale of one nanosecond (ii) and ten nanosecons (iii). Possible mechanisms of the reservoir population and depletion responsible for this behaviour are discussed.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2023-04-14T13:58:12.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "exciton dynamics",
      "large in-plane wave vector",
      "pump-induced exciton energy shift",
      "oscillator strength appear",
      "exciton energy structure"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 8,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}