ESR observation of averaged-valence and charge-density-wave states in quasi-one-dimensional halogen-bridged binuclear metal complexes

K. Marumoto, H. Tanaka, S. Kozaki, S. Kuroda, S. Miya, T. Kawashima, M. Yamashita

研究成果: Article査読

13 被引用数 (Scopus)

抄録

Electron spin resonance (ESR) measurements have been performed on quasi-one-dimensional iodo-bridged binuclear metal complexes (MMX-chain compounds) A4[Pt2(pop)4I]·nH2O (A = Li, Na, K, Rb, Cs; pop = P2O5H22-). ESR signals show a clear distinction between averaged-valence (AV) and charge-density-wave (CDW) states predicted from optical studies in these complexes. While spin susceptibility χ of the CDW states shows Curie-like behavior, χ of the AV states shows a crossover from Curie to weakly temperature-dependent behavior at high temperatures, characteristic of the Heisenberg antiferromagnetic chains. The Na (n = 2) and Cs (n = 0) compounds are typical ones exhibiting the characters of the AV and CDW states, respectively. Furthermore, a signal around g = 4 is observed, which is more remarkable in the CDW states, suggesting the formation of the state with S = 1 or higher spin values as a defect state with a continuous fine-structure parameter distribution.

本文言語English
ページ(範囲)101-106
ページ数6
ジャーナルSolid State Communications
120
2-3
DOI
出版ステータスPublished - 2001 9月 26
外部発表はい

ASJC Scopus subject areas

  • 化学 (全般)
  • 凝縮系物理学
  • 材料化学

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