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

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)983-985
Number of pages3
JournalJournal of Physics and Chemistry of Solids
Volume63
Issue number6-8
DOIs
Publication statusPublished - 2002 Jun

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Pressure effects
pressure effects
curves
Charge carriers
electronics
charge carriers
permeability
Derivatives
conduction
electrical resistivity

Keywords

  • A. Chalcogenides
  • C. High pressure
  • D. Magnetic properties
  • D. Magnetic structure

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Pressure effect on magnetic and electronic nature of Sr2Cu2CoO2S2 with strongly correlated CoO2 square-planes. / Okada, Satoshi; Matoba, Masanori; Yoshida, Hajime; Ohoyama, Kenji; Yamaguchi, Yasuo.

In: Journal of Physics and Chemistry of Solids, Vol. 63, No. 6-8, 06.2002, p. 983-985.

Research output: Contribution to journalArticle

Okada, Satoshi ; Matoba, Masanori ; Yoshida, Hajime ; Ohoyama, Kenji ; Yamaguchi, Yasuo. / Pressure effect on magnetic and electronic nature of Sr2Cu2CoO2S2 with strongly correlated CoO2 square-planes. In: Journal of Physics and Chemistry of Solids. 2002 ; Vol. 63, No. 6-8. pp. 983-985.
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