Spiral-plane flop probed by ESR in the multiferroic triangular-lattice antiferromagnet ${\text{CuCrO}}_{2}$

Spiral-plane flop probed by ESR in the multiferroic triangular-lattice antiferromagnet ${CuCrO}_{2}$

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

Phys. Rev. B 81, 033104 – Published 15 January 2010

Abstract

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 ${CuCrO}_{2}$ . We observed that one of the resonance modes showed a discontinuous change around 5.3 T for $H ∥ [1 \bar{1} 0]$ , 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.

Received 29 September 2009

DOI:https://doi.org/10.1103/PhysRevB.81.033104

Authors & Affiliations

H. Yamaguchi¹, S. Ohtomo¹, S. Kimura¹, M. Hagiwara¹, K. Kimura², T. Kimura², T. Okuda^3,4, and K. Kindo⁵

¹KYOKUGEN, Osaka University, Machikaneyama 1-3, Toyanaka 560-8531, Japan
²Division of Materials Physics, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
³Department of Nano-Structures and Advanced Materials, Kagoshima University, 1-21-40 Korimoto, Kagoshima 890-0065, Japan
⁴PRESTO, JST, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
⁵Institute for Solid State Physics, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581, Japan

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Vol. 81, Iss. 3 — 15 January 2010

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Physical Review B

covering condensed matter and materials physics

Spiral-plane flop probed by ESR in the multiferroic triangular-lattice antiferromagnet ${CuCrO}_{2}$

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

Phys. Rev. B 81, 033104 – Published 15 January 2010

Abstract

Authors & Affiliations

Article Text (Subscription Required)

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Physical Review B

covering condensed matter and materials physics

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, and K. Kindo

Phys. Rev. B 81, 033104 – Published 15 January 2010

Abstract

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Spiral-plane flop probed by ESR in the multiferroic triangular-lattice antiferromagnet ${CuCrO}_{2}$