Thermopower in Ce Kondo Systems

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

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Abstract

The giant thermopower in metals with Ce3+ impurities is theoretically studied. The relaxation time of a conduction electron is calculated as a function of energy in the selfconsistent ladder approximation by applying Abrikosov's pseudofermion technique to the Coqblin-Schrieffer exchange model with crystal field. The thermopower as well as the electrical resistivity exhibit universal behaviors if the crystal field is neglected. The crystal field induces the characteristic features and the anisotropy in the thermopower versus temperature curve. However, the sign of the thermopower is always positive in Ce system in contrast with Yb systems.

Original languageEnglish
Pages (from-to)3194-3198
Number of pages5
Journaljournal of the physical society of japan
Volume55
Issue number9
DOIs
Publication statusPublished - 1986 Sep

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Maekawa, S., Kashiba, S. I., Tachiki, M., & Takahashi, S. (1986). Thermopower in Ce Kondo Systems. journal of the physical society of japan, 55(9), 3194-3198. https://doi.org/10.1143/JPSJ.55.3194