{
  "id": "cond-mat/9809138",
  "version": "v1",
  "published": "1998-09-09T08:08:27.000Z",
  "updated": "1998-09-09T08:08:27.000Z",
  "title": "Magnetization plateau and quantum phase transition of the S=1/2 trimerized XXZ spin chain",
  "authors": [
    "Kiyomi Okamoto",
    "Atsuhiro Kitazawa"
  ],
  "comment": "11 pages, 8 figures",
  "journal": "J. Phys. A: Math. Gen. Vol.32, No.25, 4601-4609 (1999)",
  "doi": "10.1088/0305-4470/32/25/304",
  "categories": [
    "cond-mat.stat-mech",
    "cond-mat.str-el"
  ],
  "abstract": "We study the plateau of the magnetization curve at $M = M_{\\rm s}/3$ ($M_{\\rm s}$ is the saturation magnetization) of the $S=1/2$ trimerized $XXZ$ spin chain. By examining the level crossing of low-lying excitations obtained from the numerical diagonalization, we precisely determine the phase boundary between the plateau state and the no-plateau state on the $\\Delta-t$ plane, where $\\Delta$ denotes the $XXZ$ anisotropy and $t$ the magnitude of the trimerization. This quantum phase transition is of the Berezinskii-Kosterlitz-Thouless type.",
  "revisions": [
    {
      "version": "v1",
      "updated": "1998-09-09T08:08:27.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "quantum phase transition",
      "trimerized xxz spin chain",
      "magnetization plateau",
      "magnetization curve",
      "saturation magnetization"
    ],
    "tags": [
      "journal article"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 11,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}