{
  "id": "1401.1531",
  "version": "v2",
  "published": "2014-01-07T22:28:06.000Z",
  "updated": "2014-06-21T19:02:12.000Z",
  "title": "Images of edge current in InAs/GaSb quantum wells",
  "authors": [
    "Eric M. Spanton",
    "Katja C. Nowack",
    "Lingjie Du",
    "Gerard Sullivan",
    "Rui-Rui Du",
    "Kathryn A. Moler"
  ],
  "comment": "Version accepted to Physical Review Letters (http://prl.aps.org/). 12 pages, 3 figures. Supplementary Online Materials available at http://stanford.edu/group/moler/papers/Spanton_InAsGaSb_imaging_SI_v2.pdf",
  "journal": "Phys. Rev. Lett. 113, 026804 (2014)",
  "doi": "10.1103/PhysRevLett.113.026804",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "Quantum spin Hall devices with edges much longer than several microns do not display ballistic transport: that is, their measured conductances are much less than $e^2/h$ per edge. We imaged edge currents in InAs/GaSb quantum wells with long edges and determined an effective edge resistance. Surprisingly, although the effective edge resistance is much greater than $h/e^2$, it is independent of temperature up to 30 K within experimental resolution. Known candidate scattering mechanisms do not explain our observation of an effective edge resistance that is large yet temperature-independent.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2014-06-21T19:02:12.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "73.63.-b",
      "72.20.Dp",
      "85.25.Dq"
    ],
    "keywords": [
      "inas/gasb quantum wells",
      "effective edge resistance",
      "quantum spin hall devices",
      "display ballistic transport",
      "imaged edge currents"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review Letters",
      "year": 2014,
      "month": "Jul",
      "volume": 113,
      "number": 2,
      "pages": "026804"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 12,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2014PhRvL.113b6804S"
    }
  }
}