Copper pyrites CuS2 and CuSe2 as anion conductors

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

Research output: Contribution to journalArticle

27 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 languageEnglish
Article number155104
Pages (from-to)1551041-1551045
Number of pages5
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume65
Issue number15
Publication statusPublished - 2002 Apr 15
Externally publishedYes

Fingerprint

Pyrites
pyrites
Anions
Copper
Negative ions
conductors
anions
copper
Chalcogens
Thermal variables measurement
Electron correlations
Photoemission
Fermi level
Electronic properties
Specific heat
Transition metals
Magnetization
indication
photoelectric emission
heat measurement

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Ueda, H., Nohara, M., Kitazawa, K., Takagi, H., Fujimori, A., Mizokawa, T., & Yagi, T. (2002). Copper pyrites CuS2 and CuSe2 as anion conductors. Physical Review B - Condensed Matter and Materials Physics, 65(15), 1551041-1551045. [155104].

Copper pyrites CuS2 and CuSe2 as anion conductors. / Ueda, Hiroaki; Nohara, Minoru; Kitazawa, Koichi; Takagi, Hidenori; Fujimori, Atsushi; Mizokawa, Takashi; Yagi, Takehiko.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 65, No. 15, 155104, 15.04.2002, p. 1551041-1551045.

Research output: Contribution to journalArticle

Ueda, H, Nohara, M, Kitazawa, K, Takagi, H, Fujimori, A, Mizokawa, T & Yagi, T 2002, 'Copper pyrites CuS2 and CuSe2 as anion conductors', Physical Review B - Condensed Matter and Materials Physics, vol. 65, no. 15, 155104, pp. 1551041-1551045.
Ueda H, Nohara M, Kitazawa K, Takagi H, Fujimori A, Mizokawa T et al. Copper pyrites CuS2 and CuSe2 as anion conductors. Physical Review B - Condensed Matter and Materials Physics. 2002 Apr 15;65(15):1551041-1551045. 155104.
Ueda, Hiroaki ; Nohara, Minoru ; Kitazawa, Koichi ; Takagi, Hidenori ; Fujimori, Atsushi ; Mizokawa, Takashi ; Yagi, Takehiko. / Copper pyrites CuS2 and CuSe2 as anion conductors. In: Physical Review B - Condensed Matter and Materials Physics. 2002 ; Vol. 65, No. 15. pp. 1551041-1551045.
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