{
  "id": "1211.4663",
  "version": "v2",
  "published": "2012-11-20T04:52:29.000Z",
  "updated": "2013-01-04T02:27:55.000Z",
  "title": "Gapped energy spectra around the Dirac node at the surface of a 3D topological insulator in the presence of the time-reversal symmetry",
  "authors": [
    "Tetsuro Habe",
    "Yasuhiro Asano"
  ],
  "comment": "6 pages, 2 figures",
  "journal": "J. Phys. Soc. Jpn., Vol.82, No.6, p.064704 (2013)",
  "doi": "10.7566/JPSJ.82.064704",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "We discuss the excitation spectra around the Dirac node on a surface of a three-dimensional topological insulator. By using the diagrammatic expansion, we show that the coupling of an electron with the gauge field in the presence of impurity scatterings opens a gap around the Dirac node. The results are consistent with a recent experimental finding by T. Sato,et. al.[ Nature Phys. \\textbf{7}, 840 (2011)]. We also discuss the consistency between the present results and the bulk-boundary correspondence of the topological insulator in the presence of time reversal symmetry. The conclusion can be applied any two dimensional massless fermions.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2013-01-04T02:27:55.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "73.20.Hb",
      "73.20.At"
    ],
    "keywords": [
      "dirac node",
      "gapped energy spectra",
      "3d topological insulator",
      "time-reversal symmetry",
      "impurity scatterings opens"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "journal": "Journal of the Physical Society of Japan",
      "year": 2013,
      "month": "Jun",
      "volume": 82,
      "number": 6,
      "pages": 4704
    },
    "note": {
      "typesetting": "TeX",
      "pages": 6,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 1203364,
      "adsabs": "2013JPSJ...82f4704H"
    }
  }
}