Low spin to high spin transition at the onset of superconductivity in LaSrCuO and high spin state in NdCeCuO compound

Mikio Eto, Hiroshi Kamimura

研究成果: Article査読

2 被引用数 (Scopus)

抄録

Electronic structures of LaSrCuO and NdCeCuO compounds are investigated by first principles cluster calculations. In the hole-doped CuO6 cluster embedded in LaSrCuO, the ground state changes from low spin to high spin state near the doping concentration of the onset of superconductivity, owing to the effect of the apical oxygens. If we take account of the effect of the dopant divalent ions by virtual crystal approximation, the high spin state becomes more stable. While in the electron-doped CuO4 cluster in NdCeCuO, the high spin ground state always appears. Using these results, the observed phase diagrams for hole and electron-doped superconductors are explained.

本文言語English
ページ(範囲)1599-1600
ページ数2
ジャーナルPhysica C: Superconductivity and its applications
185-189
PART 3
DOI
出版ステータスPublished - 1991 12月 1
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
  • エネルギー工学および電力技術
  • 電子工学および電気工学

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