{
  "id": "1304.2210",
  "version": "v1",
  "published": "2013-04-08T14:02:07.000Z",
  "updated": "2013-04-08T14:02:07.000Z",
  "title": "Anomalous reduction of the Lorenz ratio at the quantum critical point in YbAgGe",
  "authors": [
    "J. K. Dong",
    "Y. Tokiwa",
    "S. L. Bud'ko",
    "P. C. Canfield",
    "P. Gegenwart"
  ],
  "comment": "7 pages including supplemental material",
  "journal": "Phys. Rev. Lett. 110, 176402 (2013)",
  "doi": "10.1103/PhysRevLett.110.176402",
  "categories": [
    "cond-mat.str-el"
  ],
  "abstract": "We report measurements of the electrical and thermal transport on the hexagonal heavy-fermion metal YbAgGe for temperatures $T\\geq$ 40 mK and in magnetic fields $H\\parallel ab$ up to 14 T. This distorted Kagome-lattice system displays a series of magnetic states and a quantum critical point at $H_c =4.5$ T. The Lorenz ratio $L(T)/L_0$ displays a marked reduction only close to $H_c$. A $T$-linear contribution below 120 mK, present at all different fields, allows to extrapolate the Lorenz ratio towards T=0. At the critical field this yields $L/L_0=0.92\\pm 0.03$, suggesting a violation of the Wiedemann-Franz law due to strong inelastic scattering.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2013-04-08T14:02:07.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "71.10.Hf",
      "71.27.+a"
    ],
    "keywords": [
      "quantum critical point",
      "lorenz ratio",
      "anomalous reduction",
      "hexagonal heavy-fermion metal ybagge",
      "distorted kagome-lattice system displays"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review Letters",
      "year": 2013,
      "month": "Apr",
      "volume": 110,
      "number": 17,
      "pages": 176402
    },
    "note": {
      "typesetting": "TeX",
      "pages": 7,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2013PhRvL.110q6402D"
    }
  }
}