{
  "id": "cond-mat/0106479",
  "version": "v1",
  "published": "2001-06-22T23:13:39.000Z",
  "updated": "2001-06-22T23:13:39.000Z",
  "title": "29-Si NMR and Hidden Order in URu2Si2",
  "authors": [
    "O. O. Bernal",
    "C. Rodrigues",
    "A. Martinez",
    "H. G. Lukefahr",
    "D. E. MacLaughlin",
    "A. A. Menovsky",
    "J. A. Mydosh"
  ],
  "comment": "4 pages, 4 figures, submitted to PRL",
  "doi": "10.1103/PhysRevLett.87.196402",
  "categories": [
    "cond-mat.str-el"
  ],
  "abstract": "We present new 29-Si NMR spectra in URu2Si2 for varying temperature T, and external field H. On lowering T, the systematics of the low-field lineshape and width reveal an extra component (lambda) to the linewidth below T_N ~ 17 K not observed previously. We find that lambda is magnetic-field independent and dominates the low-field lineshape for all orientations of H with respect to the tetragonal c axis. The behavior of lambda indicates a direct relationship between the 29-Si spin and the transition at T_N, but it is inconsistent with a coupling of the nuclei to static antiferromagnetic order/disorder of the U-spin magnetization. This leads us to conjecture that lambda is due to a coupling of 29-Si to the system's hidden-order parameter. A possible coupling mechanism involving charge degrees of freedom and indirect nuclear spin/spin interactions is proposed. We also propose further experiments to test for the existence of this coupling mechanism.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2001-06-22T23:13:39.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "hidden order",
      "low-field lineshape",
      "indirect nuclear spin/spin interactions",
      "static antiferromagnetic order/disorder",
      "systems hidden-order parameter"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. Lett."
    },
    "note": {
      "typesetting": "TeX",
      "pages": 4,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}