{
  "id": "cond-mat/0607069",
  "version": "v1",
  "published": "2006-07-04T08:14:39.000Z",
  "updated": "2006-07-04T08:14:39.000Z",
  "title": "Influence of the driving mechanism on the response of systems with athermal dynamics: the example of the random-field Ising model",
  "authors": [
    "Xavier Illa",
    "Martin-Luc Rosinberg",
    "Eduard Vives"
  ],
  "comment": "11 pages, 11 figures",
  "journal": "Phys. Rev. B 74, 224403 (2006)",
  "doi": "10.1103/PhysRevB.74.224403",
  "categories": [
    "cond-mat.dis-nn",
    "cond-mat.stat-mech"
  ],
  "abstract": "We investigate the influence of the driving mechanism on the hysteretic response of systems with athermal dynamics. In the framework of local-mean field theory at finite temperature (but neglecting thermallly activated processes), we compare the rate-independent hysteresis loops obtained in the random field Ising model (RFIM) when controlling either the external magnetic field $H$ or the extensive magnetization $M$. Two distinct behaviors are observed, depending on disorder strength. At large disorder, the $H$-driven and $M$-driven protocols yield identical hysteresis loops in the thermodynamic limit. At low disorder, when the $H$-driven magnetization curve is discontinuous (due to the presence of a macroscopic avalanche), the $M$-driven loop is re-entrant while the induced field exhibits strong intermittent fluctuations and is only weakly self-averaging. The relevance of these results to the experimental observations in ferromagnetic materials, shape memory alloys, and other disordered systems is discussed.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2006-07-04T08:14:39.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "random-field ising model",
      "athermal dynamics",
      "driving mechanism",
      "yield identical hysteresis loops",
      "protocols yield identical hysteresis"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. B"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 11,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}