Crystal Field in Kondo System

Sadamichi Maekawa, Saburo Takahashi, Shin ichi Kashiba, Masashi Tachiki

Research output: Contribution to journalArticlepeer-review

68 Citations (Scopus)


We present a theory for calculating the crystal field effects in Kondo systems of Ce compounds and alloys. By extending Abrikosov's pseudofermion method, the static and dynamical susceptibilities are formulated as functions of the selfenergy of the pseudofermions. The self-energy is self-consistently treated in the ladder approximation. It is shown that the crystal field is not constant but depends on temperature through the renormalization of the exchange interaction between Ce3+ ions and conduction electrons. The neutron quasi-elastic and inelastic scattering spectra and the static susceptibility are in good agreement with the experimental ones in the cubic Kondo system, CexLa1-xAl2. This agreement suggests that the present theory is applicable to many materials.

Original languageEnglish
Pages (from-to)1955-1963
Number of pages9
Journaljournal of the physical society of japan
Issue number5
Publication statusPublished - 1985 Jan 1

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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