{
  "id": "0801.1316",
  "version": "v2",
  "published": "2008-01-08T20:31:14.000Z",
  "updated": "2008-01-08T21:32:29.000Z",
  "title": "Multiscale theory of valley splitting",
  "authors": [
    "Sucismita Chutia",
    "S. N. Coppersmith",
    "Mark Friesen"
  ],
  "comment": "4 pages, 2 figures",
  "journal": "Phys. Rev. B 77, 193311 (2008)",
  "doi": "10.1103/PhysRevB.77.193311",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.mtrl-sci"
  ],
  "abstract": "The coupling between $z$ valleys in the conduction band of a Si quantum well arises from phenomena occurring within several atoms from the interface, thus ruling out a theoretical description based on pure effective mass theory. However, the complexity and size of a realistic device precludes an analytical atomistic description. Here, we develop a fully analytical multiscale theory of valley coupling, by combining effective mass and tight binding approaches. The results are of particular interest for silicon qubits and quantum devices, but also provide insight for GaAs quantum wells.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2008-01-08T21:32:29.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "73.21.Fg",
      "73.20.-r",
      "78.67.De",
      "81.05.Cy"
    ],
    "keywords": [
      "valley splitting",
      "gaas quantum wells",
      "realistic device precludes",
      "pure effective mass theory",
      "si quantum"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review B",
      "year": 2008,
      "month": "May",
      "volume": 77,
      "number": 19,
      "pages": 193311
    },
    "note": {
      "typesetting": "TeX",
      "pages": 4,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2008PhRvB..77s3311C"
    }
  }
}