{
  "id": "2306.14198",
  "version": "v1",
  "published": "2023-06-25T10:28:24.000Z",
  "updated": "2023-06-25T10:28:24.000Z",
  "title": "Imaging lattice reconstruction in homobilayers and heterobilayers of transition metal dichalcogenides",
  "authors": [
    "Anna Rupp",
    "Jonas Göser",
    "Zhijie Li",
    "Ismail Bilgin",
    "Anvar Baimuratov",
    "Alexander Högele"
  ],
  "comment": "8 pages, 5 figures",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.mtrl-sci"
  ],
  "abstract": "Moir\\'{e} interference effects have profound impact on the optoelectronic properties of vertical van der Waals structures. Here we establish secondary electron imaging in a scanning electron microscope as a powerful technique for visualizing registry-specific domains in vertical bilayers of transition metal dichalcogenides with common moir\\'e phenomena. With optimal parameters for contrast-maximizing imaging of high-symmetry registries, we identify distinct crystal realizations of WSe$_2$ homobilayers and MoSe$_2$-WSe$_2$ heterobilayers synthesized by chemical vapor deposition, and demonstrate ubiquitous lattice reconstruction in stacking-assembled bilayers with near parallel and antiparallel alignment. Our results have immediate implications for the optical properties of registry-specific excitons in layered stacks of transition metal dichalcogenides, and demonstrate the general potential of secondary electron imaging for van der Waals twistronics.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2023-06-25T10:28:24.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "transition metal dichalcogenides",
      "imaging lattice reconstruction",
      "heterobilayers",
      "homobilayers",
      "vertical van der waals structures"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 8,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}