{
  "id": "1402.5974",
  "version": "v2",
  "published": "2014-02-24T21:01:27.000Z",
  "updated": "2014-06-13T17:56:04.000Z",
  "title": "Crossovers in the dynamics of supercooled liquids probed by an amorphous wall",
  "authors": [
    "Glen M Hocky",
    "Ludovic Berthier",
    "Walter Kob",
    "David R. Reichman"
  ],
  "comment": "10 pages, 8 figures",
  "journal": "Phys. Rev. E 89, 052311 (2014)",
  "doi": "10.1103/PhysRevE.89.052311",
  "categories": [
    "cond-mat.stat-mech",
    "cond-mat.soft"
  ],
  "abstract": "We study the relaxation dynamics of a binary Lennard-Jones liquid in the presence of an amorphous wall generated from equilibrium particle configurations. In qualitative agreement with the results presented in Nature Phys. {\\bf 8}, 164 (2012) for a liquid of harmonic spheres, we find that our binary mixture shows a saturation of the dynamical length scale close to the mode-coupling temperature $T_c$. Furthermore we show that, due to the broken symmetry imposed by the wall, signatures of an additional change in dynamics become apparent at a temperature well above $T_c$. We provide evidence that this modification in the relaxation dynamics occurs at a recently proposed dynamical crossover temperature $T_s > T_c$, which is related to the breakdown of the Stokes-Einstein relation. We find that this dynamical crossover at $T_s$ is also observed for a system of harmonic spheres as well as a WCA liquid, showing that it may be a general feature of glass-forming systems.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2014-06-13T17:56:04.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "64.70.Q-",
      "05.20.Jj",
      "05.10.-a"
    ],
    "keywords": [
      "supercooled liquids",
      "amorphous wall",
      "harmonic spheres",
      "dynamical crossover",
      "binary lennard-jones liquid"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review E",
      "year": 2014,
      "month": "May",
      "volume": 89,
      "number": 5,
      "pages": "052311"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 10,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2014PhRvE..89e2311H"
    }
  }
}