{
  "id": "cond-mat/0612127",
  "version": "v2",
  "published": "2006-12-06T18:38:16.000Z",
  "updated": "2007-10-22T16:06:17.000Z",
  "title": "Quantum Critical Behavior of the Cluster Glass Phase",
  "authors": [
    "Matthew J. Case",
    "V. Dobrosavljevic"
  ],
  "comment": "v1: 4+epsilon pages, 2 figures; v2: 4 pages, 1 figure, improved discussion, version accepted to PRL",
  "journal": "Phys. Rev. Lett. 99, 147204 (2007)",
  "doi": "10.1103/PhysRevLett.99.147204",
  "categories": [
    "cond-mat.dis-nn",
    "cond-mat.str-el"
  ],
  "abstract": "In disordered itinerant magnets with arbitrary symmetry of the order parameter, the conventional quantum critical point between the ordered phase and the paramagnetic Fermi-liquid (PMFL) is destroyed due to the formation of an intervening cluster glass (CG) phase. In this Letter we discuss the quantum critical behavior at the CG-PMFL transition for systems with continuous symmetry. We show that fluctuations due to quantum Griffiths anomalies induce a first-order transition from the PMFL at T=0, while at higher temperatures a conventional continuous transition is restored. This behavior is a generic consequence of enhanced non-Ohmic dissipation caused by a broad distribution of energy scales within any quantum Griffiths phase in itinerant systems.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2007-10-22T16:06:17.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "quantum critical behavior",
      "cluster glass phase",
      "quantum griffiths anomalies induce",
      "quantum griffiths phase",
      "conventional quantum critical point"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. Lett."
    },
    "note": {
      "typesetting": "TeX",
      "pages": 4,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}