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

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

doi:10.1103/PhysRevB.65.155104

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

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

Research output: Contribution to journal › Article

6 Citations (Scopus)

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 language	English
Pages (from-to)	1-5
Number of pages	5
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	65
Issue number	15
DOIs	https://doi.org/10.1103/PhysRevB.65.155104
Publication status	Published - Jan 1 2002
Externally published	Yes

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ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Cite this

Ueda, H., Nohara, M., Kitazawa, K., Takagi, H., Fujimori, A., Mizokawa, T., & Yagi, T. (2002). Copper pyrites (formula presented) and (formula presented) as anion conductors. Physical Review B - Condensed Matter and Materials Physics, 65(15), 1-5. https://doi.org/10.1103/PhysRevB.65.155104

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AU - Fujimori, Atsushi

AU - Mizokawa, Takashi

AU - Yagi, Takehiko

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AB - (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.

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10.1103/PhysRevB.65.155104