Effect of Spin Fluctuations on Itineraut Electron Antiferromagnetism
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概要
- 論文の詳細を見る
The effect of spin fluctuations on itineraut electron antiferromagnetism is discussed by extending the theory of Moriya and Kawabata for itineraut ferromagnetism. The correction to the Hartree-Fock free energy as a function of the sublattice magnetization is expressed in terms of the transversal dynamical susceptibilities, which are approximated by the modified random phase approximation. Numerical calculations are made for the free electron model with Umklapp processes. It is shown that the contribution from spin fluctuations can be quite important in describing the magnetic properties of itinerant antiferromagnets. The Neel temperature is generally lowered from its Hartree-Fock value and the staggered susceptibility above the Neel temperature shows an approximate Curie-Weiss behavior even when the uniform susceptibility has a weak temperature dependence.
- 社団法人日本物理学会の論文
- 1974-06-15
著者
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Moriya Toru
Institute For Solid State Physics The University Of Tokyo
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Moriya Toru
Institute For Solid State Physics University Of Tokyo.
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HASEGAWA Hideo
Institute for Solid State Physics, University of Tokyo.
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Hasegawa Hideo
Institute For Solid State Physics University Of Tokyo
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Hasegawa Hideo
Institute For Solid State Physics University Of Tokyo.
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