{
  "id": "1311.6650",
  "version": "v2",
  "published": "2013-11-26T13:13:01.000Z",
  "updated": "2013-12-28T01:58:54.000Z",
  "title": "Quantum Spin Hall Effect in Two-dimensional Crystals of Transition Metal Dichalcogenides",
  "authors": [
    "M. A. Cazalilla",
    "H. Ochoa",
    "F. Guinea"
  ],
  "comment": "4+ pages; 2 figures; Supplementary information included in this revision",
  "journal": "Phys. Rev. Lett. 113, 077201 (2014)",
  "doi": "10.1103/PhysRevLett.113.077201",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.mtrl-sci",
    "cond-mat.str-el"
  ],
  "abstract": "We propose to engineer time-reversal-invariant topological insulators in two-dimensional (2D) crystals of transition metal dichalcogenides (TMDCs). We note that, at low doping, semiconducting TMDCs under shear strain will develop spin-polarized Landau levels residing in different valleys. We argue that gaps between Landau levels in the range of $10-100$ Kelvin are within experimental reach. In addition, we point out that a superlattice arising from a Moir\\'e pattern can lead to topologically non-trivial subbands. As a result, the edge transport becomes quantized, which can be probed in multi-terminal devices made using strained 2D crystals and/or heterostructures. The strong $d$ character of valence and conduction bands may also allow for the investigation of the effects of electron correlations on the topological phases.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2013-12-28T01:58:54.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "85.75.-d",
      "73.43.Qt"
    ],
    "keywords": [
      "quantum spin hall effect",
      "transition metal dichalcogenides",
      "two-dimensional crystals",
      "landau levels",
      "engineer time-reversal-invariant topological insulators"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review Letters",
      "year": 2014,
      "month": "Aug",
      "volume": 113,
      "number": 7,
      "pages": "077201"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2014PhRvL.113g7201C"
    }
  }
}