{
  "id": "0907.4515",
  "version": "v2",
  "published": "2009-07-26T20:39:05.000Z",
  "updated": "2010-10-06T21:17:43.000Z",
  "title": "Magnetoconductance of the quantum spin Hall state",
  "authors": [
    "Joseph Maciejko",
    "Xiao-Liang Qi",
    "Shou-Cheng Zhang"
  ],
  "comment": "5 pages, 3 figures",
  "journal": "Phys. Rev. B 82, 155310 (2010)",
  "doi": "10.1103/PhysRevB.82.155310",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.dis-nn",
    "cond-mat.mtrl-sci"
  ],
  "abstract": "We study numerically the edge magnetoconductance of a quantum spin Hall insulator in the presence of quenched nonmagnetic disorder. For a finite magnetic field B and disorder strength W on the order of the bulk gap E_g, the conductance deviates from its quantized value in a manner which appears to be linear in |B| at small B. The observed behavior is in qualitative agreement with the cusp-like features observed in recent magnetotransport measurements on HgTe quantum wells. We propose a dimensional crossover scenario as a function of W, in which for weak disorder W < E_g the edge liquid is analogous to a disordered spinless 1D quantum wire, while for strong disorder W > E_g, the disorder causes frequent virtual transitions to the 2D bulk, where the originally 1D edge electrons can undergo 2D diffusive motion and 2D antilocalization.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2010-10-06T21:17:43.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "73.43.-f",
      "72.15.Rn",
      "72.25.Dc"
    ],
    "keywords": [
      "quantum spin hall state",
      "magnetoconductance",
      "quantum spin hall insulator",
      "finite magnetic field",
      "hgte quantum wells"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review B",
      "year": 2010,
      "month": "Oct",
      "volume": 82,
      "number": 15,
      "pages": 155310
    },
    "note": {
      "typesetting": "TeX",
      "pages": 5,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2010PhRvB..82o5310M"
    }
  }
}