{
  "id": "2107.01567",
  "version": "v1",
  "published": "2021-07-04T07:51:00.000Z",
  "updated": "2021-07-04T07:51:00.000Z",
  "title": "Superconducting insulators and localization of Cooper pairs",
  "authors": [
    "Konstantin Yu. Arutyunov",
    "Janne S. Lehtinen",
    "Alexey Radkevich",
    "Andrew G. Semenov",
    "Andrei D. Zaikin"
  ],
  "comment": "7+2 pages,5+2 figures",
  "journal": "Communications Physics 4, 146 (2021)",
  "doi": "10.1038/s42005-021-00648-7",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.supr-con"
  ],
  "abstract": "Rapid miniaturization of electronic devices and circuits demands profound understanding of fluctuation phenomena at the nanoscale. Superconducting nanowires -- serving as important building blocks for such devices -- may seriously suffer from fluctuations which tend to destroy long-range order and suppress superconductivity. In particular, quantum phase slips (QPS) proliferating at low temperatures may turn a quasi-one-dimensional superconductor into a resistor or an insulator. Here, we introduce a physical concept of QPS-controlled localization of Cooper pairs that may occur even in uniform nanowires without any dielectric barriers being a fundamental manifestation of the flux-charge duality in superconductors. We demonstrate -- both experimentally and theoretically -- that deep in the \"insulating\" state such nanowires actually exhibit non-trivial superposition of superconductivity and weak Coulomb blockade of Cooper pairs generated by quantum tunneling of magnetic fluxons across the wire.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2021-07-04T07:51:00.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "cooper pairs",
      "superconducting insulators",
      "localization",
      "quantum phase slips",
      "weak coulomb blockade"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "Nature"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 2,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}