Correlations and semimetallic behaviors in pyrochlore oxide Cd 2Re2O7

Zenji Hiroi, Masafumi Hanawa, Yuji Muraoka, Hisatomo Harima

Research output: Contribution to journalArticlepeer-review

31 Citations (Scopus)

Abstract

Electronic properties of the metallic pyrochlore oxide Cd 2Re2O7 are studied by means of electrical resistivity and Hall measurements. Semimetallic band structures are revealed as expected from band structure calculations. It is found that large changes in carrier density and mass occur at the structural phase transition at T s1 = 200 K. A large mass enhancement is observed, particularly for the high-temperature phase with the ideal pyrochlore structure, suggesting that an anomalous correlation has an important effect on the itinerant electrons in the pyrochlore lattice.

Original languageEnglish
Pages (from-to)21-24
Number of pages4
Journaljournal of the physical society of japan
Volume72
Issue number1
DOIs
Publication statusPublished - Jan 2003
Externally publishedYes

Keywords

  • CdReO
  • Electrical resistivity
  • Hall resistivity
  • Phase transition
  • Pyrochlore oxide
  • Semimetal

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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