Quantum magnetism of perfect spin tetrahedra in Co4 B6 O13

Hiroyuki Hagiwara; Hirohiko Sato; Masahiro Iwaki; Yasuo Narumi; Koichi Kindo

doi:10.1103/PhysRevB.80.014424

Quantum magnetism of perfect spin tetrahedra in Co4 B6 O13

Hiroyuki Hagiwara, Hirohiko Sato, Masahiro Iwaki, Yasuo Narumi, Koichi Kindo

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

5 Citations (Scopus)

Abstract

Co4 B6 O13 contains undistorted tetrahedral clusters of magnetic Co2+ ions. The high-field magnetization of this magnet exhibits a periodic undulation indicating quantization of the total spin number per cluster. Measurements of magnetic susceptibility and specific heat reveal that the ground state is composed of several different singlet states, reflecting the high symmetry of the spin tetrahedron. An exact diagonalization calculation taking account of single-ion-type anisotropies and Dzyaloshinsky-Moriya interactions reproduces the experimental results very well.

Original language	English
Article number	014424
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	80
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevB.80.014424
Publication status	Published - 2009 Aug 6
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.80.014424

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abstract = "Co4 B6 O13 contains undistorted tetrahedral clusters of magnetic Co2+ ions. The high-field magnetization of this magnet exhibits a periodic undulation indicating quantization of the total spin number per cluster. Measurements of magnetic susceptibility and specific heat reveal that the ground state is composed of several different singlet states, reflecting the high symmetry of the spin tetrahedron. An exact diagonalization calculation taking account of single-ion-type anisotropies and Dzyaloshinsky-Moriya interactions reproduces the experimental results very well.",

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T1 - Quantum magnetism of perfect spin tetrahedra in Co4 B6 O13

AU - Hagiwara, Hiroyuki

AU - Sato, Hirohiko

AU - Iwaki, Masahiro

AU - Narumi, Yasuo

AU - Kindo, Koichi

PY - 2009/8/6

Y1 - 2009/8/6

N2 - Co4 B6 O13 contains undistorted tetrahedral clusters of magnetic Co2+ ions. The high-field magnetization of this magnet exhibits a periodic undulation indicating quantization of the total spin number per cluster. Measurements of magnetic susceptibility and specific heat reveal that the ground state is composed of several different singlet states, reflecting the high symmetry of the spin tetrahedron. An exact diagonalization calculation taking account of single-ion-type anisotropies and Dzyaloshinsky-Moriya interactions reproduces the experimental results very well.

AB - Co4 B6 O13 contains undistorted tetrahedral clusters of magnetic Co2+ ions. The high-field magnetization of this magnet exhibits a periodic undulation indicating quantization of the total spin number per cluster. Measurements of magnetic susceptibility and specific heat reveal that the ground state is composed of several different singlet states, reflecting the high symmetry of the spin tetrahedron. An exact diagonalization calculation taking account of single-ion-type anisotropies and Dzyaloshinsky-Moriya interactions reproduces the experimental results very well.

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JF - Physical Review B - Condensed Matter and Materials Physics

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Quantum magnetism of perfect spin tetrahedra in Co4 B6 O13

Abstract

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