{
  "id": "2304.11807",
  "version": "v1",
  "published": "2023-04-24T03:38:06.000Z",
  "updated": "2023-04-24T03:38:06.000Z",
  "title": "Gate-defined topological Josephson junctions in Bernal bilayer graphene",
  "authors": [
    "Ying-Ming Xie",
    "Étienne Lantagne-Hurtubise",
    "Andrea F. Young",
    "Stevan Nadj-Perge",
    "Jason Alicea"
  ],
  "comment": "7 pages, 4 figures, plus supplementary material",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.mtrl-sci",
    "cond-mat.str-el",
    "cond-mat.supr-con"
  ],
  "abstract": "Recent experiments on Bernal bilayer graphene (BLG) deposited on monolayer WSe$_2$ revealed robust, ultra-clean superconductivity coexisting with sizable induced spin-orbit coupling. Here we propose BLG/WSe$_2$ as a platform to engineer gate-defined planar topological Josephson junctions, where the normal and superconducting regions descend from a common material. More precisely, we show that if superconductivity in BLG/WSe$_2$ is gapped and emerges from a parent state with inter-valley coherence, then Majorana zero modes can form in the barrier region upon applying weak in-plane magnetic fields. Our results spotlight a potential pathway for `internally engineered' topological superconductivity that minimizes detrimental disorder and orbital-magnetic-field effects.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2023-04-24T03:38:06.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "bernal bilayer graphene",
      "gate-defined topological josephson junctions",
      "weak in-plane magnetic fields",
      "planar topological josephson junctions",
      "gate-defined planar topological josephson"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 7,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}