{
  "id": "1406.2684",
  "version": "v1",
  "published": "2014-06-09T09:15:57.000Z",
  "updated": "2014-06-09T09:15:57.000Z",
  "title": "Spin-flip Raman scattering of the $Γ$-X mixed exciton in indirect band-gap (In,Al)As/AlAs quantum dots",
  "authors": [
    "J. Debus",
    "T. S. Shamirzaev",
    "D. Dunker",
    "V. F. Sapega",
    "E. L. Ivchenko",
    "D. R. Yakovlev",
    "A. I. Toropov",
    "M. Bayer"
  ],
  "comment": "5 pages, 3 figures",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "The band structure of type-I (In,Al)As/AlAs quantum dots with band gap energy exceeding 1.63 eV is indirect in momentum space, leading to long-lived exciton states with potential applications in quantum information. Optical access to these excitons is provided by mixing of the $\\Gamma$- and X-conduction band valleys, from which control of their spin states can be gained. This access is used here for studying the exciton spin-level structure by resonant spin-flip Raman scattering, allowing us to accurately measure the anisotropic hole and isotropic electron $g$ factors. The spin-flip mechanisms for the indirect exciton and its constituents as well as the underlying optical selection rules are determined. The spin-flip intensity is a reliable measure of the strength of $\\Gamma$-X-valley mixing, as evidenced by both experiment and theory.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2014-06-09T09:15:57.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "78.67.Hc",
      "73.21.La",
      "78.30.Fs",
      "85.75.-d"
    ],
    "keywords": [
      "as/alas quantum dots",
      "spin-flip raman scattering",
      "indirect band-gap",
      "mixed exciton",
      "resonant spin-flip raman"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1103/PhysRevB.90.125431",
      "journal": "Physical Review B",
      "year": 2014,
      "month": "Sep",
      "volume": 90,
      "number": 12,
      "pages": 125431
    },
    "note": {
      "typesetting": "TeX",
      "pages": 5,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2014PhRvB..90l5431D"
    }
  }
}