{
  "id": "cond-mat/0112378",
  "version": "v2",
  "published": "2001-12-20T10:47:04.000Z",
  "updated": "2002-06-05T12:41:25.000Z",
  "title": "Fluctuation-dissipation ratio of a spin glass in the aging regime",
  "authors": [
    "D. Herisson",
    "M. Ocio"
  ],
  "comment": "4 pages, 3 figures",
  "journal": "Physical Review Letters 88, 257202 (2002)",
  "doi": "10.1103/PhysRevLett.88.257202",
  "categories": [
    "cond-mat.dis-nn",
    "cond-mat.stat-mech"
  ],
  "abstract": "We present the first experimental determination of the time autocorrelation $C(t',t)$ of magnetization in the non-stationary regime of a spin glass. Quantitative comparison with the response, the magnetic susceptibility $\\chi(t',t)$, is made using a new experimental setup allowing both measurements in the same conditions. Clearly, we observe a non-linear fluctuation-dissipation relation between $C$ and $\\chi$, depending weakly on the waiting time $t'$. Following theoretical developments on mean-field models, and lately on short range models, it is predicted that in the limit of long times, the $\\chi(C)$ relationship should become independent on $t'$. A scaling procedure allows us to extrapolate to the limit of long waiting times.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2002-06-05T12:41:25.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "spin glass",
      "fluctuation-dissipation ratio",
      "aging regime",
      "first experimental determination",
      "short range models"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. Lett."
    },
    "note": {
      "typesetting": "TeX",
      "pages": 4,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}