{
  "id": "2203.09031",
  "version": "v1",
  "published": "2022-03-17T02:13:59.000Z",
  "updated": "2022-03-17T02:13:59.000Z",
  "title": "Geometric Effect of High-Resolution Electron Energy Loss Spectroscopy on the Identification of Plasmons: An Example of Graphene",
  "authors": [
    "Jiade Li",
    "Zijian Lin",
    "Guangyao Miao",
    "Weiliang Zhong",
    "Siwei Xue",
    "Yi Li",
    "Zhiyu Tao",
    "Weihua Wang",
    "Jiandong Guo",
    "Xuetao Zhu"
  ],
  "comment": "5 figures",
  "journal": "Surface Science 721 122067 (2022)",
  "doi": "10.1016/j.susc.2022.122067",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.mtrl-sci",
    "cond-mat.other"
  ],
  "abstract": "High-resolution electron energy loss spectroscopy (HREELS) is one of the most powerful methods to detect the dispersion of plasmons. However, we find that in the HREELS measurement, the scattering geometric configuration will seriously affect the identification of plasmons. Here, taking graphene as an example, using the HREELS capable of two-dimensional energy-momentum mapping combined with the intensity distribution calculations, we visually display the intensity distribution of the scattering geometric factor. We demonstrate that the energy loss peaks from the scattering geometric effect may be misinterpreted as the features of an acoustic plasmon. In any HREELS measurement, it is necessary to evaluate the effect of the scattering geometry quantitatively to identify the intrinsic surface excitations.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2022-03-17T02:13:59.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "high-resolution electron energy loss spectroscopy",
      "geometric effect",
      "identification",
      "scattering geometric",
      "hreels measurement"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "Elsevier"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}