TY - JOUR
T1 - Spiral-plane flop probed by ESR in the multiferroic triangular-lattice antiferromagnet CuCrO2
AU - Yamaguchi, H.
AU - Ohtomo, S.
AU - Kimura, S.
AU - Hagiwara, M.
AU - Kimura, K.
AU - Kimura, T.
AU - Okuda, T.
AU - Kindo, K.
PY - 2010/1/15
Y1 - 2010/1/15
N2 - 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.
AB - 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.
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U2 - 10.1103/PhysRevB.81.033104
DO - 10.1103/PhysRevB.81.033104
M3 - Article
AN - SCOPUS:77954773444
VL - 81
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
SN - 0163-1829
IS - 3
M1 - 033104
ER -