{
  "id": "1212.3679",
  "version": "v1",
  "published": "2012-12-15T12:53:08.000Z",
  "updated": "2012-12-15T12:53:08.000Z",
  "title": "Spontaneous Symmetry Breaking and Dynamic Phase Transition in Monolayer Silicene",
  "authors": [
    "Lan Chen",
    "Hui Li",
    "Baojie Feng",
    "Zijing Ding",
    "Jinglan Qiu",
    "Peng Cheng",
    "Kehui Wu",
    "Sheng Meng"
  ],
  "comment": "12 pages, 4 figures",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.mtrl-sci"
  ],
  "abstract": "The (r3xr3)R30{\\deg} honeycomb of silicene monolayer on Ag(111) was found to undergo a phase transition to two types of mirror-symmetric boundary-separated rhombic phases at temperatures below 40 K by scanning tunneling microscopy. The first-principles calculations reveal that weak interactions between silicene and Ag(111) drive the spontaneous ultra buckling in the monolayer silicene, forming two energy-degenerate and mirror-symmetric (r3xr3)R30{\\deg} rhombic phases, in which the linear band dispersion near Dirac point (DP) and a significant gap opening (150 meV) at DP were induced. The low transition barrier between these two phases enables them interchangeable through dynamic flip-flop motion, resulting in the (r3xr3)R30{\\deg} honeycomb structure observed at high temperature.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2012-12-15T12:53:08.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "61.46.-w",
      "68.37.Ef",
      "73.22.-f",
      "81.05.Zx"
    ],
    "keywords": [
      "dynamic phase transition",
      "monolayer silicene",
      "spontaneous symmetry breaking",
      "dynamic flip-flop motion",
      "first-principles calculations reveal"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1103/PhysRevLett.110.085504",
      "journal": "Physical Review Letters",
      "year": 2013,
      "month": "Feb",
      "volume": 110,
      "number": 8,
      "pages": "085504"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 12,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2013PhRvL.110h5504C"
    }
  }
}