Crossover from dilute-Kondo system to heavy-fermion system

Hiroshi Watanabe*, Masao Ogata

*この研究の対応する著者

研究成果査読

10 被引用数 (Scopus)

抄録

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.

本文言語English
論文番号113111
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
81
11
DOI
出版ステータスPublished - 2010 3 29
外部発表はい

ASJC Scopus subject areas

  • 凝縮系物理学
  • 電子材料、光学材料、および磁性材料

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