Mode-Coupling Approaches to the Critical Dynamics of Isotropic Antiferromagnets
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概要
- 論文の詳細を見る
To study the critical dynamics of three-dimensional isotropic antiferromagnts, we investigate an effective mode coupling model, in which staggered and uniform magnetic fluctuations are coupled by equations of motion. The model is solved exactly by direct simulations. The numerical results are compared with those obtained in the conventional approximations of the mode-coupling theory. The approximate results for the universal function of the dynamic scaling law are found to be semi-quantitatively satisfactory, with the exception of a spin-wave-like structure, not confirmed numerically but predicted in the approximation. The results are compared with a recent neutron scattering experiment on RbMnF3.
- Physical Society of Japanの論文
- 2001-08-15
著者
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Nagao Tatsuya
Faculty Of Engineering Gunma University
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Igarashi Jun-ichi
Faculty Of Engineering Gunma University
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Okabe Takuya
Faculty Of Engineering Gunma University
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Nagao Tatsuya
Faculty of Engineering, Gunma University, Kiryu, Gunma 376-8515
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Okabe Takuya
Faculty of Engineering, Shizuoka University, Hamamatsu 432-8561
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