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

研究成果: Article査読

3 被引用数 (Scopus)

抄録

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.

本文言語English
ページ(範囲)130-133
ページ数4
ジャーナルJournal of Low Temperature Physics
159
1-2
DOI
出版ステータスPublished - 2010 4 1
外部発表はい

ASJC Scopus subject areas

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

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