Copper pyrites CuS2 and CuSe2 as anion conductors

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

Copper pyrites CuS₂ and CuSe₂ as anion conductors

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

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

34 Citations (Scopus)

Abstract

CuS₂ and CuSe₂ with pyrite structures were systematically studied by transport, magnetization, and specific-heat measurements. In remarkable contrast to other 3d 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, CuS₂ and CuSe₂, can be viewed as anion conductors.

Original language	English
Article number	155104
Pages (from-to)	1551041-1551045
Number of pages	5
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	65
Issue number	15
Publication status	Published - 2002 Apr 15
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Cite this

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title = "Copper pyrites CuS2 and CuSe2 as anion conductors",

abstract = "CuS2 and CuSe2 with pyrite structures were systematically studied by transport, magnetization, and specific-heat measurements. In remarkable contrast to other 3d 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, CuS2 and CuSe2, can be viewed as anion conductors.",

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T1 - Copper pyrites CuS2 and CuSe2 as anion conductors

AU - Ueda, Hiroaki

AU - Nohara, Minoru

AU - Kitazawa, Koichi

AU - Takagi, Hidenori

AU - Fujimori, Atsushi

AU - Mizokawa, Takashi

AU - Yagi, Takehiko

PY - 2002/4/15

Y1 - 2002/4/15

N2 - CuS2 and CuSe2 with pyrite structures were systematically studied by transport, magnetization, and specific-heat measurements. In remarkable contrast to other 3d 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, CuS2 and CuSe2, can be viewed as anion conductors.

AB - CuS2 and CuSe2 with pyrite structures were systematically studied by transport, magnetization, and specific-heat measurements. In remarkable contrast to other 3d 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, CuS2 and CuSe2, can be viewed as anion conductors.

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M3 - Article

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SN - 0163-1829

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JO - Physical Review B-Condensed Matter

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ER -

Copper pyrites CuS₂ and CuSe₂ as anion conductors

Abstract

ASJC Scopus subject areas

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