Note on the Spin Wave Theory of Antiferromagnetism
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概要
- 論文の詳細を見る
Spins in an atiferromagnet subjected to an external field perpendicular to the preferred axis of antiferromagnetic magnetization are not exactly aligned parallel and antiparallel to this axis. It is shown that a better approximation to the spin wave theory can be worked out, if one takes the equilibrium directions of the spins as the axes of quantization. One obtains the field-dependent resonance frequency of a microwave, which the usual spin wave theory fails to give, and also a higher approximation to the perpendicular susceptibility. The value of the letter in the limit of vanishing field strength agrees with the one obtained by Kubo.
- 理論物理学刊行会の論文
著者
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YOSIDA Kei
Department of Physics, Science University of Tokyo
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KANAMORI Junjiro
Department of Physics, Faculty of Science, Osaka University
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Yosida Kei
Department Of Physics Faculty Of Science And Technology Science University Of Tokyo
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Kanamori Junjiro
Department Of Physics Faculty Of Science Osaka University
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