External pressure enhancement of the dense Kondo effect in a PdCe intermetallic compound

Kazunori Umeo, Yoichiro Aya, Masaru Itakura, Noriyuki Kuwano, Kensuke Oki

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

In order to clarify the effect of external pressure on the dense Kondo state, we have measured the electrical resistivity of a PdCe intermetallic compound in the temperature range 77-300 K under several pressures up to 7 GPa. The changes in electrical resistivity and lattice volume with pressure have been also examined at room temperature. It was found that the resistivity ratio of PdCe at room temperature increases with pressure P gradually to R(P) R(Pa) = 1.75 until it reaches 7.7 GPa, where Pa is the ambient pressure, and then shows a rapid increase to 2.5 at about 8.5 GPa, while the lattice volume decreases monotonically with pressure over the whole range up to 9.5 GPa. The resistivity ratio R(T) R(TR) at low temperatures T increases significantly as the pressure is raised. These experimental results show that the dense Kondo effect in PdCe is strongly enhanced by external pressure.

Original languageEnglish
Pages (from-to)131-134
Number of pages4
JournalJournal of Physics and Chemistry of Solids
Volume54
Issue number1
DOIs
Publication statusPublished - Jan 1993

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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