{
  "id": "1007.2733",
  "version": "v1",
  "published": "2010-07-16T10:23:45.000Z",
  "updated": "2010-07-16T10:23:45.000Z",
  "title": "Optical imaging of resonant electrical carrier injection into individual quantum dots",
  "authors": [
    "A. Baumgartner",
    "E. Stock",
    "A. Patanè",
    "L. Eaves",
    "M. Henini",
    "D. Bimberg"
  ],
  "comment": "4 pages",
  "journal": "Phys. Rev. Lett. 105, 257401 (2010)",
  "doi": "10.1103/PhysRevLett.105.257401",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "We image the micro-electroluminescence (EL) spectra of self-assembled InAs quantum dots (QDs) embedded in the intrinsic region of a GaAs p-i-n diode and demonstrate optical detection of resonant carrier injection into a single QD. Resonant tunneling of electrons and holes into the QDs at bias voltages below the flat-band condition leads to sharp EL lines characteristic of individual QDs, accompanied by a spatial fragmentation of the surface EL emission into small and discrete light- emitting areas, each with its own spectral fingerprint and Stark shift. We explain this behavior in terms of Coulomb interaction effects and the selective excitation of a small number of QDs within the ensemble due to preferential resonant tunneling paths for carriers.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2010-07-16T10:23:45.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "78.67.Hc",
      "73.21.La",
      "73.63.-b",
      "78.60.Fi"
    ],
    "keywords": [
      "resonant electrical carrier injection",
      "individual quantum dots",
      "optical imaging",
      "sharp el lines characteristic",
      "gaas p-i-n diode"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review Letters",
      "year": 2010,
      "month": "Dec",
      "volume": 105,
      "number": 25,
      "pages": 257401
    },
    "note": {
      "typesetting": "TeX",
      "pages": 4,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2010PhRvL.105y7401B"
    }
  }
}