{
  "id": "1210.4320",
  "version": "v1",
  "published": "2012-10-16T09:15:55.000Z",
  "updated": "2012-10-16T09:15:55.000Z",
  "title": "Induced superconductivity in the three-dimensional topological insulator HgTe",
  "authors": [
    "Luis Maier",
    "Jeroen B. Oostinga",
    "Daniel Knott",
    "Christoph Bruene",
    "Pauli Virtanen",
    "Grigory Tkachov",
    "Ewelina M. Hankiewicz",
    "Charles Gould",
    "Hartmut Buhmann",
    "Laurens W. Molenkamp"
  ],
  "comment": "Accepted for publication in Physical Review Letters",
  "journal": "Phys. Rev. Lett. 109, 186806 (2012)",
  "doi": "10.1103/PhysRevLett.109.186806",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "A strained and undoped HgTe layer is a three-dimensional topological insulator, in which electronic transport occurs dominantly through its surface states. In this Letter, we present transport measurements on HgTe-based Josephson junctions with Nb as superconductor. Although the Nb-HgTe interfaces have a low transparency, we observe a strong zero-bias anomaly in the differential resistance measurements. This anomaly originates from proximity-induced superconductivity in the HgTe surface states. In the most transparent junction, we observe periodic oscillations of the differential resistance as function of an applied magnetic field, which correspond to a Fraunhofer-like pattern. This unambiguously shows that a precursor of the Josephson effect occurs in the topological surface states of HgTe.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2012-10-16T09:15:55.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "74.45.+c",
      "73.23.-b",
      "73.25.+i",
      "72.80.Ey"
    ],
    "keywords": [
      "three-dimensional topological insulator hgte",
      "induced superconductivity",
      "electronic transport occurs",
      "hgte surface states",
      "josephson effect occurs"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review Letters",
      "year": 2012,
      "month": "Nov",
      "volume": 109,
      "number": 18,
      "pages": 186806
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 1190937,
      "adsabs": "2012PhRvL.109r6806M"
    }
  }
}