{
  "id": "cond-mat/0404323",
  "version": "v2",
  "published": "2004-04-14T12:06:40.000Z",
  "updated": "2005-07-20T17:55:20.000Z",
  "title": "Andreev reflection at high magnetic fields: Evidence for electron and hole transport in edge states",
  "authors": [
    "J. Eroms",
    "D. Weiss",
    "J. De Boeck",
    "G. Borghs",
    "U. Zülicke"
  ],
  "comment": "accepted for Phys Rev Lett, some changes to text",
  "journal": "Phys. Rev. Lett. 95, 107001 (2005)",
  "doi": "10.1103/PhysRevLett.95.107001",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.supr-con"
  ],
  "abstract": "We have studied magnetotransport in arrays of niobium filled grooves in an InAs/AlGaSb heterostructure. The critical field of up to 2.6 T permits to enter the quantum Hall regime. In the superconducting state, we observe strong magnetoresistance oscillations, whose amplitude exceeds the Shubnikov-de Haas oscillations by a factor of about two, when normalized to the background. Additionally, we find that above a geometry-dependent magnetic field value the sample in the superconducting state has a higher longitudinal resistance than in the normal state. Both observations can be explained with edge channels populated with electrons and Andreev reflected holes.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2005-07-20T17:55:20.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "high magnetic fields",
      "hole transport",
      "andreev reflection",
      "edge states",
      "geometry-dependent magnetic field value"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. Lett."
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}