Spiral-plane flop probed by ESR in the multiferroic triangular-lattice antiferromagnet CuCrO2

H. Yamaguchi, S. Ohtomo, S. Kimura, M. Hagiwara, K. Kimura, T. Kimura, T. Okuda, K. Kindo

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34 Citations (Scopus)


We have performed high-field multifrequency electron spin resonance and magnetization measurements in magnetic field H up to about 53 T on single crystals of a multiferroic triangular-lattice antiferromagnet CuCrO2. We observed that one of the resonance modes showed a discontinuous change around 5.3 T for H||[1 1̄ 0], where the system undergoes a first-order phase transition accompanying a remarkable magnetoelectric effect. We explain the observed anomaly quantitatively in terms of the spiral-plane flop, considering a distorted triangular-lattice model with two kinds of antiferromagnetic in-plane exchange interactions and rhombic anisotropy.

Original languageEnglish
Article number033104
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number3
Publication statusPublished - 2010 Jan 15
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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