{
  "id": "1104.1072",
  "version": "v1",
  "published": "2011-04-06T12:11:02.000Z",
  "updated": "2011-04-06T12:11:02.000Z",
  "title": "Improved tunneling magnetoresistance at low temperature in manganite junctions grown by molecular beam epitaxy",
  "authors": [
    "Robert Werner",
    "Alexandr Yu. Petrov",
    "Lucero Alvarez Mino",
    "Reinhold Kleiner",
    "Dieter Koelle",
    "Bruce A. Davidson"
  ],
  "comment": "6 pages, 7 figures; accepted in Applied Physics Letters",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.mtrl-sci"
  ],
  "abstract": "We report resistance versus magnetic field measurements for a La0.65Sr0.35MnO3/SrTiO3/La0.65Sr0.35MnO3 tunnel junction grown by molecular-beam epitaxy, that show a large field window of extremely high tunneling magnetoresistance (TMR) at low temperature. Scanning the in-plane applied field orientation through 360^/circ, the TMR shows 4-fold symmetry, i.e. biaxial anisotropy, aligned with the crystalline axes but not the junction geometrical long axis. The TMR reaches ~ 1900% at 4K, corresponding to an interfacial spin polarization of > 95% assuming identical interfaces. These results show that uniaxial anisotropy is not necessary for large TMR, and lay the groundwork for future improvements in TMR in manganite junctions.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2011-04-06T12:11:02.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "molecular beam epitaxy",
      "manganite junctions grown",
      "low temperature",
      "tunneling magnetoresistance",
      "35mno3 tunnel junction grown"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1063/1.3581885",
      "journal": "Applied Physics Letters",
      "year": 2011,
      "month": "Apr",
      "volume": 98,
      "number": 16,
      "pages": 162505
    },
    "note": {
      "typesetting": "TeX",
      "pages": 6,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2011ApPhL..98p2505W"
    }
  }
}