Electronic Structure of the Quasi Two-Dimensional Mott System BaCo1-xNixS2

Katsuaki Kodama; Shin Ichi Shamoto; Hiroshi Harashina; Jun Takeda; Masatoshi Sato; Kazuhisa Kakurai; Masakazu Nishi

doi:10.1143/JPSJ.65.1782

Electronic Structure of the Quasi Two-Dimensional Mott System BaCo_1-xNi_xS₂

Katsuaki Kodama, Shin Ichi Shamoto, Hiroshi Harashina, Jun Takeda, Masatoshi Sato, Kazuhisa Kakurai, Masakazu Nishi

Department of Physics

Research output: Contribution to journal › Article › peer-review

34 Citations (Scopus)

Abstract

By means of neutron powder diffraction on antiferromagnetic samples of BaCo_1-xNi_xS₂ the spin structure has been determined. The magnitudes of the ordered moments are ∼ 2.9μ_B at 10 K for x -0.0 and ∼ 1.7μ_B at 100 K for x = 0.175. The results are not compatible with the electronic configuration (3d_3z2-r2)^1+x, which was previously assumed to explain the physical behavior of the system. Instead, the configuration seems to be (3d_yz or 3d_zx)¹(3d_3z2-r2)¹(3d _x2-y2)¹ in BaCoS₂. Each Ni atom substituted for Co adds one electron to this system. Based on this basic picture of the electronic structure, various physical properties of BaCo_1-xNi_xS₂ ever published are discussed.

Original language	English
Pages (from-to)	1782-1786
Number of pages	5
Journal	Journal of the Physical Society of Japan
Volume	65
Issue number	6
DOIs	https://doi.org/10.1143/JPSJ.65.1782
Publication status	Published - 1996

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)

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@article{392563e634644795a9e9d10d0ec60714,

title = "Electronic Structure of the Quasi Two-Dimensional Mott System BaCo1-xNixS2",

abstract = "By means of neutron powder diffraction on antiferromagnetic samples of BaCo1-xNixS2 the spin structure has been determined. The magnitudes of the ordered moments are ∼ 2.9μB at 10 K for x -0.0 and ∼ 1.7μB at 100 K for x = 0.175. The results are not compatible with the electronic configuration (3d3z2-r2)1+x, which was previously assumed to explain the physical behavior of the system. Instead, the configuration seems to be (3dyz or 3dzx)1(3d3z2-r2)1(3d x2-y2)1 in BaCoS2. Each Ni atom substituted for Co adds one electron to this system. Based on this basic picture of the electronic structure, various physical properties of BaCo1-xNixS2 ever published are discussed.",

author = "Katsuaki Kodama and Shamoto, {Shin Ichi} and Hiroshi Harashina and Jun Takeda and Masatoshi Sato and Kazuhisa Kakurai and Masakazu Nishi",

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TY - JOUR

T1 - Electronic Structure of the Quasi Two-Dimensional Mott System BaCo1-xNixS2

AU - Kodama, Katsuaki

AU - Shamoto, Shin Ichi

AU - Harashina, Hiroshi

AU - Takeda, Jun

AU - Sato, Masatoshi

AU - Kakurai, Kazuhisa

AU - Nishi, Masakazu

PY - 1996

Y1 - 1996

N2 - By means of neutron powder diffraction on antiferromagnetic samples of BaCo1-xNixS2 the spin structure has been determined. The magnitudes of the ordered moments are ∼ 2.9μB at 10 K for x -0.0 and ∼ 1.7μB at 100 K for x = 0.175. The results are not compatible with the electronic configuration (3d3z2-r2)1+x, which was previously assumed to explain the physical behavior of the system. Instead, the configuration seems to be (3dyz or 3dzx)1(3d3z2-r2)1(3d x2-y2)1 in BaCoS2. Each Ni atom substituted for Co adds one electron to this system. Based on this basic picture of the electronic structure, various physical properties of BaCo1-xNixS2 ever published are discussed.

AB - By means of neutron powder diffraction on antiferromagnetic samples of BaCo1-xNixS2 the spin structure has been determined. The magnitudes of the ordered moments are ∼ 2.9μB at 10 K for x -0.0 and ∼ 1.7μB at 100 K for x = 0.175. The results are not compatible with the electronic configuration (3d3z2-r2)1+x, which was previously assumed to explain the physical behavior of the system. Instead, the configuration seems to be (3dyz or 3dzx)1(3d3z2-r2)1(3d x2-y2)1 in BaCoS2. Each Ni atom substituted for Co adds one electron to this system. Based on this basic picture of the electronic structure, various physical properties of BaCo1-xNixS2 ever published are discussed.

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