{
  "id": "1303.1079",
  "version": "v1",
  "published": "2013-03-05T15:55:15.000Z",
  "updated": "2013-03-05T15:55:15.000Z",
  "title": "Anomalous Transport in Sketched Nanostructures at the LaAlO3/SrTiO3 Interface",
  "authors": [
    "Guanglei Cheng",
    "Joshua P. Veazey",
    "Patrick Irvin",
    "Cheng Cen1",
    "Daniela F. Bogorin1",
    "Feng Bi",
    "Mengchen Huang",
    "Shicheng Lu",
    "Chung-Wung Bark",
    "Sangwoo Ryu",
    "Kwang-Hwan Cho",
    "Chang-Beom Eom",
    "Jeremy Levy"
  ],
  "journal": "Phys. Rev. X 3, 011021 (2013)",
  "doi": "10.1103/PhysRevX.3.011021",
  "categories": [
    "cond-mat.mes-hall",
    "quant-ph"
  ],
  "abstract": "The oxide heterostructure LaAlO3/SrTiO3 supports a two-dimensional electron liquid with a variety of competing phases including magnetism, superconductivity and weak antilocalization due to Rashba spin-orbit coupling. Further confinement of this 2D electron liquid to the quasi-one-dimensional regime can provide insight into the underlying physics of this system and reveal new behavior. Here we describe magnetotransport experiments on narrow LaAlO3/SrTiO3 structures created by a conductive atomic force microscope lithography technique. Four-terminal local transport measurements on ~10-nm-wide Hall bar structures yield longitudinal resistances that are comparable to the resistance quantum h/e2 and independent of the channel length. Large nonlocal resistances (as large as 10^4 ohms) are observed in some but not all structures with separations between current and voltage that are large compared to the 2D mean-free path. The nonlocal transport is strongly suppressed by the onset of superconductivity below ~200 mK. The origin of these anomalous transport signatures is not understood, but may arise from coherent transport defined by strong spin-orbit coupling and/or magnetic interactions.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2013-03-05T15:55:15.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "73.40.-c"
    ],
    "keywords": [
      "anomalous transport",
      "laalo3/srtio3 interface",
      "sketched nanostructures",
      "hall bar structures yield longitudinal",
      "bar structures yield longitudinal resistances"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review X",
      "year": 2013,
      "month": "Jan",
      "volume": 3,
      "number": 1,
      "pages": "011021"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2013PhRvX...3a1021C"
    }
  }
}