Pressure effect on magnetic and electronic nature of Sr2Cu2CoO2S2 with strongly correlated CoO2 square-planes

Satoshi Okada, Masanori Matoba, Hajime Yoshida, Kenji Ohoyama, Yasuo Yamaguchi

研究成果: Article査読

7 被引用数 (Scopus)

抄録

We have studied pressure effects on the magnetic and electronic nature of layered oxysulfide Sr2Cu2CoO2S2 which crystallizes in an unusual intergrowth structure. The derivative permeability (dμ/dT) curves have a kink near Tt at which the antiferromagnetic nature is changed from 2D to 3D; Tt extremely rises with increasing pressure (dTt/dP = 13.5 K/kbar), indicating that 3D antiferromagnetic state is more stable under pressure. The Tt in the dμ/dT curves correspond to the bending point of the resistivity, and above Tt the nearest-neighbor hopping conduction occurs. These features would be discussed from the viewpoint of the coupled nature of charge carriers and 2D antiferromagnetic spin ordering.

本文言語English
ページ(範囲)983-985
ページ数3
ジャーナルJournal of Physics and Chemistry of Solids
63
6-8
DOI
出版ステータスPublished - 2002

ASJC Scopus subject areas

  • 化学 (全般)
  • 材料科学(全般)
  • 凝縮系物理学

フィンガープリント

「Pressure effect on magnetic and electronic nature of Sr<sub>2</sub>Cu<sub>2</sub>CoO<sub>2</sub>S<sub>2</sub> with strongly correlated CoO<sub>2</sub> square-planes」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル