{
  "id": "cond-mat/0404704",
  "version": "v1",
  "published": "2004-04-29T11:25:09.000Z",
  "updated": "2004-04-29T11:25:09.000Z",
  "title": "Vortex formation in quantum dots in high magnetic fields",
  "authors": [
    "H. Saarikoski",
    "A. Harju",
    "M. J. Puska",
    "R. M. Nieminen"
  ],
  "comment": "4 pages, 5 figures, QD2004 conference paper",
  "journal": "Physica E 26, 317 (2005)",
  "doi": "10.1016/j.physe.2004.08.070",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.str-el"
  ],
  "abstract": "We study electronic structures of two-dimensional quantum dots in high magnetic fields using the density-functional theory (DFT) and the exact diagonalization (ED). With increasing magnetic field, beyond the formation of the totally spin-polarized maximum density droplet (MDD) state, the DFT gives the ground-state total angular momentum as a continuous function with well-defined plateaus. The plateaus agree well with the magic angular momenta of the ED calculation. By constructing a conditional wave function from the Kohn-Sham states we show that vortices enter the quantum dot one-by-one at the transition to the state with the adjacent magic angular momentum. Vortices are also observed outside the high-density region of the quantum dot. These findings are compared to the ED results and we report a significant agreement. We study also interpretations and limitations of the density functional approach in these calculations.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2004-04-29T11:25:09.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "high magnetic fields",
      "quantum dot",
      "vortex formation",
      "adjacent magic angular momentum",
      "ground-state total angular momentum"
    ],
    "tags": [
      "conference paper",
      "journal article"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 4,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}