{
  "id": "1507.05089",
  "version": "v1",
  "published": "2015-07-17T20:00:06.000Z",
  "updated": "2015-07-17T20:00:06.000Z",
  "title": "Supercurrent Reversal in Two-Dimensional Topological Insulators",
  "authors": [
    "Alexander Zyuzin",
    "Mohammad Alidoust",
    "Daniel Loss"
  ],
  "comment": "5 pages + 2 pages of supplemental material, 3 figures",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.str-el",
    "cond-mat.supr-con"
  ],
  "abstract": "We theoretically demonstrate that a supercurrent across a two-dimensional topological insulator subjected to an external magnetic field unambiguously reveals the existence of edge-mode superconductivity. When the edge states of a narrow two-dimensional topological insulator are hybridized, an external magnetic field can close the hybridization gap, thus driving a quantum phase transition from insulator to semimetal states of the topological insulator. Importantly, we find a sign reversal of the supercurrent at the quantum phase transition which offers a simple and experimentally feasible way to observe intrinsic properties of topological insulators including edge-mode superconductivity.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2015-07-17T20:00:06.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "supercurrent reversal",
      "external magnetic field",
      "quantum phase transition",
      "edge-mode superconductivity",
      "narrow two-dimensional topological insulator"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 5,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}