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 journalArticlepeer-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 languageEnglish
Pages (from-to)130-133
Number of pages4
JournalJournal of Low Temperature Physics
Volume159
Issue number1-2
DOIs
Publication statusPublished - 2010 Apr 1
Externally publishedYes

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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