{
  "id": "cond-mat/0206413",
  "version": "v1",
  "published": "2002-06-21T21:09:49.000Z",
  "updated": "2002-06-21T21:09:49.000Z",
  "title": "Novel excitonic states in quantum Hall systems: Bound states of spin waves and a valence band hole",
  "authors": [
    "John J. Quinn",
    "Arkadiusz Wojs"
  ],
  "comment": "9 pages, 4 figures, invited lecture at SID8, Buffalo (2002)",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "If the Zeeman energy is small, the lowest energy excitations of a two dimensional electron gas at filling factor nu=1 are spin waves (spin flip excitations). At nu slightly larger (smaller) than unity, reversed spin electrons (spin holes) can form bound states with K spin waves that are known as skyrmions, S_K^- (antiskyrmions, S_K^+). It is suggested in this work that a valence hole can also bind K spin waves to form an excitonic complex X_K^+, analogous to the S_K^+. One spin hole of the S_K^+ is simply replaced by the valence hole. At nu<=1, a small number of S_K^+'s are present before introduction of the valence hole. The (S_K^+)-(X_K^+) repulsion leads to correlations and photoluminescence similar to those of a dilute electron-(charged-exciton) (e-X^-) system at nu<=1/3. At nu>=1, the (S_K^-)-(X_K^+) attraction can potentially lead to different behavior.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2002-06-21T21:09:49.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "spin waves",
      "valence band hole",
      "quantum hall systems",
      "novel excitonic states",
      "bound states"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 9,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2002cond.mat..6413Q"
    }
  }
}