{
  "id": "0704.3017",
  "version": "v3",
  "published": "2007-04-23T14:25:32.000Z",
  "updated": "2007-08-01T06:25:41.000Z",
  "title": "Andreev reflection and strongly enhanced magnetoresistance oscillations in GaInAs/InP heterostructures with superconducting contacts",
  "authors": [
    "I. E. Batov",
    "Th. Schapers",
    "N. M. Chtchelkatchev",
    "H. Hardtdegen",
    "A. V. Ustinov"
  ],
  "comment": "5 pages, 5 figures",
  "doi": "10.1103/PhysRevB.76.115313",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "We study the magnetotransport in small hybrid junctions formed by high-mobility GaInAs/InP heterostructures coupled to superconducting (S) and normal metal (N) terminals. Highly transmissive superconducting contacts to a two-dimensional electron gas (2DEG) located in a GaInAs/InP heterostructure are realized by using a Au/NbN layer system. The magnetoresistance of the S/2DEG/N structures is studied as a function of dc bias current and temperature. At bias currents below a critical value, the resistance of the S/2DEG/N structures develops a strong oscillatory dependence on the magnetic field, with an amplitude of the oscillations considerably larger than that of the reference N/2DEG/N structures. The experimental results are qualitatively explained by taking Andreev reflection in high magnetic fields into account.",
  "revisions": [
    {
      "version": "v3",
      "updated": "2007-08-01T06:25:41.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "73.23.-b",
      "74.45.+c"
    ],
    "keywords": [
      "strongly enhanced magnetoresistance oscillations",
      "andreev reflection",
      "superconducting contacts",
      "s/2deg/n structures",
      "bias current"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review B",
      "year": 2007,
      "month": "Sep",
      "volume": 76,
      "number": 11,
      "pages": 115313
    },
    "note": {
      "typesetting": "TeX",
      "pages": 5,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2007PhRvB..76k5313B"
    }
  }
}