{
  "id": "0712.1392",
  "version": "v1",
  "published": "2007-12-10T04:37:37.000Z",
  "updated": "2007-12-10T04:37:37.000Z",
  "title": "Chirality tunneling and quantum dynamics for domain walls in mesoscopic ferromagnets",
  "authors": [
    "E. G. Galkina",
    "B. A. Ivanov",
    "Sergey Savel'ev",
    "Franco Nori"
  ],
  "comment": "27 pages, 9 figures",
  "doi": "10.1103/PhysRevB.77.134425",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.mtrl-sci"
  ],
  "abstract": "We studied the quantum dynamics of ferromagnetic domain walls (topological kink-type solitons) in one dimensional ferromagnetic spin chains. We show that the tunneling probability does not depend on the number of spins in a domain wall; thus, this probability can be large even for a domain wall containing a large number of spins. We also predict that there is a strong interplay between the tunneling of a wall from one lattice site to another (tunneling of the kink coordinate) and the tunneling of the kink topological charge (so-called chirality). Both of these elementary processes are suppressed for kinks in one-dimensional ferromagnets with half-integer spin. The dispersion law (i.e., the domain wall energy versus momentum) is essentially different for chains with either integer or half-integer spins. The predicted quantum effects could be observed for mesoscopic magnetic structures, e.g., chains of magnetic clusters, large-spin molecules, or nanosize magnetic dots.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2007-12-10T04:37:37.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "75.10.Jm",
      "75.50.Cc",
      "75.60.Ch",
      "75.10.Pq"
    ],
    "keywords": [
      "quantum dynamics",
      "mesoscopic ferromagnets",
      "chirality tunneling",
      "half-integer spin",
      "dimensional ferromagnetic spin chains"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review B",
      "year": 2008,
      "month": "Apr",
      "volume": 77,
      "number": 13,
      "pages": 134425
    },
    "note": {
      "typesetting": "TeX",
      "pages": 27,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2008PhRvB..77m4425G"
    }
  }
}