{
  "id": "2411.09526",
  "version": "v1",
  "published": "2024-11-14T15:42:15.000Z",
  "updated": "2024-11-14T15:42:15.000Z",
  "title": "Binding energy of polaronic trions and biexcitons in CsPbBr$_3$ nanocrystals",
  "authors": [
    "Jose L. Movilla",
    "Josep Planelles",
    "Juan I. Climente"
  ],
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "The effect of polaron formation on the ground state of excitons, trions and biexcitons confined in CsPbBr$_3$ nanocrystals is studied in the framework of effective mass Hamiltonians, using a Haken-like (Bajaj) potential for carrier-phonon coupling. The binding energy of trions agrees well with that observed in experiments, with position-dependent dielectric screening playing a significant role. For biexcitons, however, neither polaronic effects, nor dielectric confinement, nor electronic correlations --here accounted for with a variational Quantum Monte Carlo method-- suffice to explain the large binding energies reported by single nanocrystal spectroscopy experiments. This result reinforces the hypothesis that biexcitons polarize the perovskite lattice differently from excitons and trions.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2024-11-14T15:42:15.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "binding energy",
      "polaronic trions",
      "biexcitons",
      "single nanocrystal spectroscopy experiments",
      "variational quantum monte carlo"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}