{
  "id": "2311.18682",
  "version": "v1",
  "published": "2023-11-30T16:29:15.000Z",
  "updated": "2023-11-30T16:29:15.000Z",
  "title": "Electronic and spectral properties of Ge1-xSnx quantum dots: an atomistic study",
  "authors": [
    "Krzysztof Gawarecki",
    "Jakub Ziembicki",
    "Paweł Scharoch",
    "Robert Kudrawiec"
  ],
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "In this paper, we study theoretically the electron and spectral properties of Ge1-xSnx systems, including alloys, cubic- and spherical quantum dots. The single-particle electron and hole states are calculated within the sp3d5s* tight-binding approach and used in further modeling of the optical properties. We systematically study the interplay of Sn-driven indirect-direct band-gap transition and the quantum confinement effect in systems of reduced dimensionality. We demonstrate the regime of sizes and composition, where the ground state in Ge1-xSnx quantum dot is optically active. Finally, we calculate absorbance spectra in experimentally-relevant colloidal quantum dots and demonstrate a satisfactory agreement with experimental data.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2023-11-30T16:29:15.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "ge1-xsnx quantum dot",
      "spectral properties",
      "atomistic study",
      "experimentally-relevant colloidal quantum dots",
      "electronic"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}