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 journalArticlepeer-review

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 Jan 1

Keywords

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

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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