{
  "id": "1007.0833",
  "version": "v1",
  "published": "2010-07-06T08:39:19.000Z",
  "updated": "2010-07-06T08:39:19.000Z",
  "title": "Imaging charge and spin diffusion of minority carriers in GaAs",
  "authors": [
    "I. Favorskiy",
    "D. Vu",
    "E. Peytavit",
    "S. Arscott",
    "D. Paget",
    "A. C. H. Rowe"
  ],
  "comment": "13 pages, 3 figures",
  "journal": "Rev. Sci. Instr. 81, 103902 (2010)",
  "doi": "10.1063/1.3493047",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "Room temperature electronic diffusion is studied in 3 mum thick epitaxial p+ GaAs lift-off films using a novel circularly polarized photoluminescence microscope. The method is equivalent to using a standard optical microscope and provides a contactless means to measure charge (L) and spin (L_s) diffusion lengths. The measured values of L and L_s are in excellent agreement with the spatially averaged polarization and a sharp reduction in these two quantities (L from 21.3 mum to 1.2 mum and L_s from 1.3 mum to 0.8 mum) is measured with increasing surface recombination. Outwards diffusion results in a factor of 10 increase in the polarization at the excitation spot.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2010-07-06T08:39:19.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "78.66.Fd",
      "72.20.Jv",
      "73.50.Gr",
      "78.55.Cr"
    ],
    "keywords": [
      "spin diffusion",
      "minority carriers",
      "imaging charge",
      "room temperature electronic diffusion",
      "novel circularly polarized photoluminescence microscope"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "journal": "Review of Scientific Instruments",
      "year": 2010,
      "month": "Oct",
      "volume": 81,
      "number": 10,
      "pages": 3902
    },
    "note": {
      "typesetting": "TeX",
      "pages": 13,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2010RScI...81j3902F"
    }
  }
}