Copper pyrites (formula presented) and (formula presented) as anion conductors

Hiroaki Ueda, Minoru Nohara, Koichi Kitazawa, Hidenori Takagi, Atsushi Fujimori, Takashi Mizokawa, Takehiko Yagi

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Abstract

(formula presented) and (formula presented) with pyrite structures were systematically studied by transport, magnetization, and specific-heat measurements. In remarkable contrast to other (formula presented) transition-metal pyrites, a clear indication of strong electron correlations was absent in the electronic properties of Cu pyrites. We interpret this as a consequence of the dominant chalcogen p character rather than copper d character at the Fermi level. Photoemission results indeed support this picture, indicating that the Cu is predominantly monovalent. We therefore conclude that Cu pyrites, (formula presented) and (formula presented) can be viewed as anion conductors.

Original languageEnglish
Pages (from-to)1-5
Number of pages5
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume65
Issue number15
DOIs
Publication statusPublished - 2002 Jan 1
Externally publishedYes

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ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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