High-field and multi-frequency ESR in the quasi two-dimensional triangular-lattice antiferromagnet CuCrO 2

H. Yamaguchi; S. Otomo; S. Kimura; M. Hagiwara; K. Kimura; T. Kimura; K. Kindo

doi:10.1007/s10909-009-0083-9

High-field and multi-frequency ESR in the quasi two-dimensional triangular-lattice antiferromagnet CuCrO ₂

H. Yamaguchi, S. Otomo, S. Kimura, M. Hagiwara, K. Kimura, T. Kimura, K. Kindo

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

3 Citations (Scopus)

Abstract

We have performed high-field and multi-frequency electron spin resonance (ESR) and magnetization measurements in magnetic fields up to about 53 T on single crystals of a delafossite triangular-lattice antiferromagnet CuCrO ₂, which has been proposed to show an out-of-plane 120° spiral spin structure below about 24 K. We calculated ESR resonance modes and magnetization curves assuming an Ising-like Heisenberg Hamiltonian with a spiral spin structure by a mean-field theory. The experimental results can be well reproduced using the following parameters, the intralayer exchange constant J/k _B=26.9 K, the easy-axis anisotropy D/k _B=-0.47 K, and the in-plane g-factor g _ab =2.0.

Original language	English
Pages (from-to)	130-133
Number of pages	4
Journal	Journal of Low Temperature Physics
Volume	159
Issue number	1-2
DOIs	https://doi.org/10.1007/s10909-009-0083-9
Publication status	Published - 2010 Apr 1
Externally published	Yes

Keywords

CuCrO
High-field and multi-frequency ESR
High-field magnetization
Multiferroics
Triangular lattice

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Materials Science(all)
Condensed Matter Physics

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title = "High-field and multi-frequency ESR in the quasi two-dimensional triangular-lattice antiferromagnet CuCrO 2 ",

abstract = "We have performed high-field and multi-frequency electron spin resonance (ESR) and magnetization measurements in magnetic fields up to about 53 T on single crystals of a delafossite triangular-lattice antiferromagnet CuCrO 2, which has been proposed to show an out-of-plane 120° spiral spin structure below about 24 K. We calculated ESR resonance modes and magnetization curves assuming an Ising-like Heisenberg Hamiltonian with a spiral spin structure by a mean-field theory. The experimental results can be well reproduced using the following parameters, the intralayer exchange constant J/k B=26.9 K, the easy-axis anisotropy D/k B=-0.47 K, and the in-plane g-factor g ab =2.0.",

keywords = "CuCrO, High-field and multi-frequency ESR, High-field magnetization, Multiferroics, Triangular lattice",

author = "H. Yamaguchi and S. Otomo and S. Kimura and M. Hagiwara and K. Kimura and T. Kimura and K. Kindo",

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T1 - High-field and multi-frequency ESR in the quasi two-dimensional triangular-lattice antiferromagnet CuCrO 2

AU - Yamaguchi, H.

AU - Otomo, S.

AU - Kimura, S.

AU - Hagiwara, M.

AU - Kimura, K.

AU - Kimura, T.

AU - Kindo, K.

PY - 2010/4/1

Y1 - 2010/4/1

N2 - We have performed high-field and multi-frequency electron spin resonance (ESR) and magnetization measurements in magnetic fields up to about 53 T on single crystals of a delafossite triangular-lattice antiferromagnet CuCrO 2, which has been proposed to show an out-of-plane 120° spiral spin structure below about 24 K. We calculated ESR resonance modes and magnetization curves assuming an Ising-like Heisenberg Hamiltonian with a spiral spin structure by a mean-field theory. The experimental results can be well reproduced using the following parameters, the intralayer exchange constant J/k B=26.9 K, the easy-axis anisotropy D/k B=-0.47 K, and the in-plane g-factor g ab =2.0.

AB - We have performed high-field and multi-frequency electron spin resonance (ESR) and magnetization measurements in magnetic fields up to about 53 T on single crystals of a delafossite triangular-lattice antiferromagnet CuCrO 2, which has been proposed to show an out-of-plane 120° spiral spin structure below about 24 K. We calculated ESR resonance modes and magnetization curves assuming an Ising-like Heisenberg Hamiltonian with a spiral spin structure by a mean-field theory. The experimental results can be well reproduced using the following parameters, the intralayer exchange constant J/k B=26.9 K, the easy-axis anisotropy D/k B=-0.47 K, and the in-plane g-factor g ab =2.0.

KW - CuCrO

KW - High-field and multi-frequency ESR

KW - High-field magnetization

KW - Multiferroics

KW - Triangular lattice

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