Copper pyrites CuS2 and CuSe2 as anion conductors

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

*この研究の対応する著者

研究成果: Article査読

32 被引用数 (Scopus)

抄録

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.

本文言語English
論文番号155104
ページ(範囲)1551041-1551045
ページ数5
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
65
15
出版ステータスPublished - 2002 4 15
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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