Crossover from dilute-Kondo system to heavy-fermion system

Hiroshi Watanabe, Masao Ogata

研究成果: Article

9 引用 (Scopus)

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Ground-state properties of a Kondo lattice model with random configuration of f electrons are investigated with a variational Monte Carlo method. We show that the crossover from a dilute-Kondo system to a heavy-fermion system occurs when the density of c and f electrons (nc, nf) become comparable, nf nc. In the heavy-fermion region, the correlation between f electrons is strong and the f electrons themselves greatly contribute to the screening of other f -electron moments. We propose that the character of Kondo screening changes from "individual" to "collective" across the crossover.

元の言語English
記事番号113111
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
81
発行部数11
DOI
出版物ステータスPublished - 2010 3 29
外部発表Yes

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ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

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