{
  "id": "cond-mat/0412491",
  "version": "v2",
  "published": "2004-12-17T19:12:31.000Z",
  "updated": "2007-07-12T21:25:22.000Z",
  "title": "Hysteretic resistance spikes in quantum Hall ferromagnets without domains",
  "authors": [
    "Henrique J. P. Freire",
    "J. Carlos Egues"
  ],
  "comment": "4 pages, 4 figures, published version (some changes to the text; same figures as in v1)",
  "journal": "Phys. Rev. Lett. 99, 026801 (2007)",
  "doi": "10.1103/PhysRevLett.99.026801",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "We use spin-density-functional theory to study recently reported hysteretic magnetoresistance \\rho_{xx} spikes in Mn-based 2D electron gases [Jaroszy\\'{n}ski et al. Phys. Rev. Lett. (2002)]. We find hysteresis loops in our calculated Landau fan diagrams and total energies signaling quantum-Hall-ferromagnet phase transitions. Spin-dependent exchange-correlation effects are crucial to stabilize the relevant magnetic phases arising from distinct symmetry-broken excited- and ground-state solutions of the Kohn-Sham equations. Besides hysteretic spikes in \\rho_{xx}, we predict hysteretic dips in the Hall resistance \\rho_{xy}. Our theory, without domain walls, satisfactorily explains the recent data.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2007-07-12T21:25:22.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "quantum hall ferromagnets",
      "hysteretic resistance spikes",
      "total energies signaling quantum-hall-ferromagnet phase",
      "energies signaling quantum-hall-ferromagnet phase transitions",
      "landau fan diagrams"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. Lett."
    },
    "note": {
      "typesetting": "TeX",
      "pages": 4,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}