{
  "id": "1109.2660",
  "version": "v1",
  "published": "2011-09-13T01:46:39.000Z",
  "updated": "2011-09-13T01:46:39.000Z",
  "title": "Ultra-low carrier concentration and surface dominant transport in Sb-doped Bi2Se3 topological insulator nanoribbons",
  "authors": [
    "Seung Sae Hong",
    "Judy J. Cha",
    "Desheng Kong",
    "Yi Cui"
  ],
  "comment": "5 pages, 4 figures, 1 table",
  "journal": "Nature Communications 3, 757 (2012)",
  "doi": "10.1038/ncomms1771",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.mtrl-sci"
  ],
  "abstract": "A topological insulator is a new state of matter, possessing gapless spin-locking surface states across the bulk band gap which has created new opportunities from novel electronics to energy conversion. However, the large concentration of bulk residual carriers has been a major challenge for revealing the property of the topological surface state via electron transport measurement. Here we report surface state dominated transport in Sb-doped Bi2Se3 nanoribbons with very low bulk electron concentrations. In the nanoribbons with sub-10nm thickness protected by a ZnO layer, we demonstrate complete control of their top and bottom surfaces near the Dirac point, achieving the lowest carrier concentration of 2x10^11/cm2 reported in three-dimensional (3D) topological insulators. The Sb-doped Bi2Se3 nanostructures provide an attractive materials platform to study fundamental physics in topological insulators, as well as future applications.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2011-09-13T01:46:39.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "sb-doped bi2se3 topological insulator nanoribbons",
      "ultra-low carrier concentration",
      "surface dominant transport",
      "surface state dominated transport"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "journal": "Nature Communications",
      "year": 2012,
      "month": "Mar",
      "volume": 3,
      "pages": 757
    },
    "note": {
      "typesetting": "TeX",
      "pages": 5,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2012NatCo...3E.757H"
    }
  }
}