{
  "id": "cond-mat/0607168",
  "version": "v1",
  "published": "2006-07-06T15:32:23.000Z",
  "updated": "2006-07-06T15:32:23.000Z",
  "title": "Phase coherence of conduction electrons below the Kondo temperature",
  "authors": [
    "Gassem M. Alzoubi Norman O. Birge"
  ],
  "comment": "4 pages, 3 figures, 1 table",
  "journal": "Phys. Rev. Lett. 97, 226803 (2006)",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "We have measured the phase decoherence rate, $\\tau_{\\phi}^{-1}$ of conduction electrons in disordered Ag wires implanted with 2 and 10 parts per million Fe impurities, by means of the weak localization magnetoresistance. The Kondo temperature of Fe in Ag, $T_K \\approx 4$ K, is in the ideal temperature range to study the progressive screening of the Fe spins as the temperature $T$ falls below $T_K$. The contribution to $\\tau_{\\phi}^{-1}$ from the Fe impurities is clearly visible over the temperature range 40 mK -- 10 K. Below $T_K$, $\\tau_{\\phi}^{-1}$ falls rapidly until $T/T_K \\approx 0.1$, in agreement with recent theoretical calculations. At lower $T$, $\\tau_{\\phi}^{-1}$ deviates from theory with a flatter $T$-dependence. We speculate that this latter behavior is due to incomplete screening of the s=2 Fe impurities by the conduction electrons.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2006-07-06T15:32:23.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "conduction electrons",
      "kondo temperature",
      "phase coherence",
      "million fe impurities",
      "phase decoherence rate"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. Lett."
    },
    "note": {
      "typesetting": "TeX",
      "pages": 4,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}