{
  "id": "cond-mat/0702159",
  "version": "v2",
  "published": "2007-02-06T22:52:55.000Z",
  "updated": "2007-07-28T16:16:39.000Z",
  "title": "Superfluidity of Grain Boundaries in Solid Helium-4",
  "authors": [
    "L. Pollet",
    "M. Boninsegni",
    "A. B. Kuklov",
    "N. V. Prokof'ev",
    "B. V. Svistunov",
    "M. Troyer"
  ],
  "comment": "replaced with published version, includes EPAPS material",
  "journal": "Phys. Rev. Lett. 98, 135301 (2007)",
  "doi": "10.1103/PhysRevLett.98.135301",
  "categories": [
    "cond-mat.stat-mech",
    "cond-mat.other"
  ],
  "abstract": "By large-scale quantum Monte Carlo simulations we show that grain boundaries in Helium-4 crystals are generically superfluid at low temperature, with a transition temperature of the order of ~0.5K at the melting pressure; insulating grain boundaries are found only for special orientations of the grains. We also find that close vicinity to the melting line is not a necessary condition for superfluid grain boundaries, and a grain boundary in direct contact with the superfluid liquid at the melting curve is found to be mechanically stable and the grain boundary superfluidity observed by Sasaki et al. [Science 313, 1098 (2006)] is not just a crack filled with superfluid.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2007-07-28T16:16:39.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "large-scale quantum monte carlo simulations",
      "superfluid grain boundaries",
      "grain boundary superfluidity",
      "close vicinity",
      "transition temperature"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. Lett."
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}