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

doi:10.1016/S0022-3697(02)00049-5

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

Department of Applied Physics and Physico-Informatics

Research output: Contribution to journal › Article › peer-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 T_t at which the antiferromagnetic nature is changed from 2D to 3D; T_t extremely rises with increasing pressure (dT_t/dP = 13.5 K/kbar), indicating that 3D antiferromagnetic state is more stable under pressure. The T_t in the dμ/dT curves correspond to the bending point of the resistivity, and above T_t 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 language	English
Pages (from-to)	983-985
Number of pages	3
Journal	Journal of Physics and Chemistry of Solids
Volume	63
Issue number	6-8
DOIs	https://doi.org/10.1016/S0022-3697(02)00049-5
Publication status	Published - 2002

Keywords

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

ASJC Scopus subject areas

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

Access to Document

10.1016/S0022-3697(02)00049-5

Cite this

@article{d386cf134da7473894203d1fefea4f69,

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

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.",

keywords = "A. Chalcogenides, C. High pressure, D. Magnetic properties, D. Magnetic structure",

author = "Satoshi Okada and Masanori Matoba and Hajime Yoshida and Kenji Ohoyama and Yasuo Yamaguchi",

note = "Funding Information: We are grateful to Mr S. Soyano and Mr S. Fukumoto (Keio University) for their technical assistance in the sample preparation. The work was supported by the Ministry of Education, Science, and Culture, Grant-in-Aid for Scientific Research (C), 11640212, 2000. The HERMES and high-pressure measurement were performed under the inter-university cooperative research program of the Institute for Materials Research, Tohoku University. One of us (S.O.) is also grateful to Grant for the promotion of the advancement of education and research in graduate schools and Keio Leading-edge Laboratory (KLL) Research Grants for PhD students.",

year = "2002",

doi = "10.1016/S0022-3697(02)00049-5",

language = "English",

volume = "63",

pages = "983--985",

journal = "Journal of Physics and Chemistry of Solids",

issn = "0022-3697",

publisher = "Elsevier Limited",

number = "6-8",

}

TY - JOUR

T1 - Pressure effect on magnetic and electronic nature of Sr2Cu2CoO2S2 with strongly correlated CoO2 square-planes

AU - Okada, Satoshi

AU - Matoba, Masanori

AU - Yoshida, Hajime

AU - Ohoyama, Kenji

AU - Yamaguchi, Yasuo

N1 - Funding Information: We are grateful to Mr S. Soyano and Mr S. Fukumoto (Keio University) for their technical assistance in the sample preparation. The work was supported by the Ministry of Education, Science, and Culture, Grant-in-Aid for Scientific Research (C), 11640212, 2000. The HERMES and high-pressure measurement were performed under the inter-university cooperative research program of the Institute for Materials Research, Tohoku University. One of us (S.O.) is also grateful to Grant for the promotion of the advancement of education and research in graduate schools and Keio Leading-edge Laboratory (KLL) Research Grants for PhD students.

PY - 2002

Y1 - 2002

N2 - 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.

AB - 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.

KW - A. Chalcogenides

KW - C. High pressure

KW - D. Magnetic properties

KW - D. Magnetic structure

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