{
  "id": "1401.0507",
  "version": "v2",
  "published": "2014-01-02T19:05:34.000Z",
  "updated": "2014-01-20T17:47:56.000Z",
  "title": "Evidence for Majorana bound states in transport properties of hybrid structures based on helical liquids",
  "authors": [
    "François Crépin",
    "Björn Trauzettel",
    "Fabrizio Dolcini"
  ],
  "comment": "In v2, section IV about Josephson junctions has been partly rewritten in order to discuss the ABS spectrum in the presence of a double ferromagnetic barrier. The list of references has been updated",
  "journal": "Phys. Rev. B 89, 205115 (2014)",
  "doi": "10.1103/PhysRevB.89.205115",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "Majorana bound states can emerge as zero-energy modes at the edge of a two-dimensional topological insulator in proximity to an ordinary s-wave superconductor. The presence of an additional ferromagnetic domain close to the superconductor can lead to their localization. We consider both N-S and S-N-S junctions based on helical liquids and study their spectral properties for arbitrary ferromagnetic scatterers in the normal region. Thereby, we explicitly compute Andreev wave-functions at zero energy. We show under which conditions these states form localized Majorana bound states in N-S and S-N-S junctions. Interestingly, we can identify Majorana-specific signatures in the transport properties of N-S junctions and the Andreev bound levels of S-N-S junctions that are robust against external perturbations. We illustrate these findings with the example of a ferromagnetic double barrier (i.e. a quantum dot) close to the N-S boundaries.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2014-01-20T17:47:56.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "74.45.+c",
      "74.78.Na",
      "71.10.Pm"
    ],
    "keywords": [
      "transport properties",
      "helical liquids",
      "hybrid structures",
      "s-n-s junctions",
      "form localized majorana bound states"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review B",
      "year": 2014,
      "month": "May",
      "volume": 89,
      "number": 20,
      "pages": 205115
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2014PhRvB..89t5115C"
    }
  }
}