{
  "id": "1303.1207",
  "version": "v1",
  "published": "2013-03-05T22:18:32.000Z",
  "updated": "2013-03-05T22:18:32.000Z",
  "title": "Gate defined wires in HgTe quantum wells: from Majorana fermions to spintronics",
  "authors": [
    "Johannes Reuther",
    "Jason Alicea",
    "Amir Yacoby"
  ],
  "comment": "19 pages, 9 figures",
  "journal": "Phys. Rev. X 3, 031011 (2013)",
  "doi": "10.1103/PhysRevX.3.031011",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.supr-con"
  ],
  "abstract": "We introduce a promising new platform for Majorana zero-modes and various spintronics applications based on gate-defined wires in HgTe quantum wells. Due to the Dirac-like band structure for HgTe the physics of such systems differs markedly from that of conventional quantum wires. Most strikingly, we show that the subband parameters for gate-defined HgTe wires exhibit exquisite tunability: modest gate voltage variation allows one to modulate the Rashba spin-orbit energies from zero up to ~30K, and the effective g-factors from zero up to giant values exceeding 600. The large achievable spin-orbit coupling and g-factors together allow one to access Majorana modes in this setting at exceptionally low magnetic fields while maintaining robustness against disorder. As an additional benefit, gate-defined wires (in HgTe or other settings) should greatly facilitate the fabrication of networks for refined transport experiments used to detect Majoranas, as well as the realization of non-Abelian statistics and quantum information devices.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2013-03-05T22:18:32.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "03.67.Lx",
      "74.45.+c",
      "73.21.Hb",
      "85.35.Be"
    ],
    "keywords": [
      "hgte quantum wells",
      "gate defined wires",
      "majorana fermions",
      "spintronics",
      "modest gate voltage variation"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review X",
      "year": 2013,
      "month": "Jul",
      "volume": 3,
      "pages": "031011"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 19,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 1222713,
      "adsabs": "2013PhRvX...3c1011R"
    }
  }
}