{
  "id": "1111.5730",
  "version": "v2",
  "published": "2011-11-24T11:32:49.000Z",
  "updated": "2012-03-05T15:35:11.000Z",
  "title": "Experimental verification of PbBi$_{2}$Te$_{4}$ as a 3D topological insulator",
  "authors": [
    "K. Kuroda",
    "H. Miyahara",
    "M. Ye",
    "S. V. Eremeev",
    "Yu. M. Koroteev",
    "E. E. Krasovskii",
    "E. V. Chulkov",
    "S. Hiramoto",
    "C. Moriyoshi",
    "Y. Kuroiwa",
    "K. Miyamoto",
    "T. Okuda",
    "M. Arita",
    "K. Shimada",
    "H. Namatame",
    "M. Taniguchi",
    "Y. Ueda",
    "A. Kimura"
  ],
  "comment": "5 pages, 5 figures, accepted for publication in Phys. Rev. Lett",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "The first experimental evidence is presented of the topological insulator state in PbBi$_{2}$Te$_{4}$. A single surface Dirac cone is observed by angle-resolved photoemission spectroscopy (ARPES) with synchrotron radiation. Topological invariants $\\mathbb{Z}_2$ are calculated from the {\\it ab initio} band structure to be 1; (111). The observed two-dimensional iso-energy contours in the bulk energy gap are found to be the largest among the known three-dimensional topological insulators. This opens a pathway to achieving a sufficiently large spin current density in future spintronic devices.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2012-03-05T15:35:11.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "73.20.-r",
      "71.20.-b",
      "75.70.Tj",
      "79.60.-i"
    ],
    "keywords": [
      "3d topological insulator",
      "experimental verification",
      "single surface dirac cone",
      "sufficiently large spin current density",
      "first experimental evidence"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1103/PhysRevLett.108.206803",
      "journal": "Physical Review Letters",
      "year": 2012,
      "month": "May",
      "volume": 108,
      "number": 20,
      "pages": 206803
    },
    "note": {
      "typesetting": "TeX",
      "pages": 5,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2012PhRvL.108t6803K"
    }
  }
}