{
  "id": "2208.08788",
  "version": "v1",
  "published": "2022-08-18T11:48:23.000Z",
  "updated": "2022-08-18T11:48:23.000Z",
  "title": "Fano Interference in a Single-Molecule Junction",
  "authors": [
    "Yiping Ouyang",
    "Rui Wang",
    "Deping Guo",
    "Yang-Yang Ju",
    "Danfeng Pan",
    "Xuecou Tu",
    "Lin Kang",
    "Jian Chen",
    "Peiheng Wu",
    "Xuefeng Wang",
    "Jianguo Wan",
    "Minhao Zhang",
    "Wei Ji",
    "Yuan-Zhi Tan",
    "Su-Yuan Xie",
    "Fengqi Song"
  ],
  "comment": "13 pages (main text), 4000 Words (main text), 5 figures",
  "categories": [
    "cond-mat.mes-hall",
    "physics.app-ph",
    "physics.atm-clus"
  ],
  "abstract": "Trends of miniaturized devices and quantum interference electronics lead to the long desire of Fano interference in single-molecule junctions, here, which is successfully demonstrated using the 2,7-di(4-pyridyl)-9,9'-spirobifluorene molecule with a long backbone group and a short side group. Experimentally, the two electrically coupled groups are found to contribute to two blurred degenerate points in the differential conductance mapping. This forms a characteristic non-centrosymmetric double-crossing feature, with distinct temperature response for each crossing. Theoretically, we describe the practical in-junction electron transmission using a new two-tunnelling-channel coupling model and obtain a working formula with a Fano term and a Breit-Wigner term. The formula is shown to provide a good fit for all the mapping data and their temperature dependence in three dimensions, identifying the Fano component. Our work thus forms a complete set of evidence of the Fano interference in a single-molecule junction induced by two-tunnelling-channel coupling transport. Density functional theory calculations are used to corroborate this new physics.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2022-08-18T11:48:23.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "single-molecule junction",
      "fano interference",
      "density functional theory calculations",
      "distinct temperature response",
      "practical in-junction electron transmission"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 13,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}