{
  "id": "1002.0612",
  "version": "v3",
  "published": "2010-02-02T23:44:46.000Z",
  "updated": "2010-05-06T16:22:35.000Z",
  "title": "Memory and rejuvenation in a spin glass",
  "authors": [
    "R. Mathieu",
    "M. Hudl",
    "P. Nordblad"
  ],
  "comment": "EPL style; 7 pages, 5 figures",
  "journal": "Europhys. Lett. 90, 67003 (2010)",
  "categories": [
    "cond-mat.dis-nn"
  ],
  "abstract": "The temperature dependence of the magnetisation of a Cu(Mn) spin glass ($T_g$ $\\approx$ 57 K) has been investigated using weak probing magnetic fields ($H$ = 0.5 or 0 Oe) and specific thermal protocols. The behaviour of the zero-field cooled, thermoremanent and isothermal remanent magnetisation on (re-)cooling the system from a temperature (40 K) where the system has been aged is investigated. It is observed that the measured magnetisation is formed by two parts: (i) a temperature- and observation time-dependent thermally activated relaxational part governed by the age- and temperature-dependent response function and the (latest) field change made at a lower temperature, superposed on (ii) a weakly temperature-dependent frozen-in part. Interestingly we observe that the spin configuration that is imprinted during an elongated halt in the cooling, if it is accompanied by a field induced magnetisation, also includes a unidirectional excess magnetisation that is recovered on returning to the ageing temperature.",
  "revisions": [
    {
      "version": "v3",
      "updated": "2010-05-06T16:22:35.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "spin glass",
      "rejuvenation",
      "temperature-dependent response function",
      "time-dependent thermally activated relaxational part"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1209/0295-5075/90/67003",
      "journal": "EPL (Europhysics Letters)",
      "year": 2010,
      "month": "Jun",
      "volume": 90,
      "number": 6,
      "pages": 67003
    },
    "note": {
      "typesetting": "TeX",
      "pages": 7,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2010EL.....9067003M"
    }
  }
}