{
  "id": "1105.5138",
  "version": "v2",
  "published": "2011-05-25T20:00:04.000Z",
  "updated": "2011-09-16T21:15:11.000Z",
  "title": "Weyl Semimetal in a Topological Insulator Multilayer",
  "authors": [
    "A. A. Burkov",
    "Leon Balents"
  ],
  "comment": "4 pages, 3 figures, published version",
  "journal": "Phys. Rev. Lett. 107, 127205 (2011)",
  "doi": "10.1103/PhysRevLett.107.127205",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "We propose a simple realization of the three-dimensional (3D) Weyl semimetal phase, utilizing a multilayer structure, composed of identical thin films of a magnetically-doped 3D topological insulator (TI), separated by ordinary-insulator spacer layers. We show that the phase diagram of this system contains a Weyl semimetal phase of the simplest possible kind, with only two Dirac nodes of opposite chirality, separated in momentum space, in its bandstructure. This particular type of Weyl semimetal has a finite anomalous Hall conductivity, chiral edge states, and occurs as an intermediate phase between an ordinary insulator and a 3D quantum anomalous Hall insulator with a quantized Hall conductivity, equal to $e^2/h$ per TI layer. We find that the Weyl semimetal has a nonzero DC conductivity at zero temperature and is thus an unusual metallic phase, characterized by a finite anomalous Hall conductivity and topologically-protected edge states.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2011-09-16T21:15:11.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "75.47.-m",
      "03.65.Vf",
      "71.90.+q",
      "73.43.-f"
    ],
    "keywords": [
      "topological insulator multilayer",
      "finite anomalous hall conductivity",
      "weyl semimetal phase",
      "3d quantum anomalous hall insulator",
      "edge states"
    ],
    "tags": [
      "journal article",
      "famous paper"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review Letters",
      "year": 2011,
      "month": "Sep",
      "volume": 107,
      "number": 12,
      "pages": 127205
    },
    "note": {
      "typesetting": "TeX",
      "pages": 4,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2011PhRvL.107l7205B"
    }
  }
}