Band Theoretical Interpretation of Neutron Diffraction Phenomena in Ferromagnetic Metals
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概要
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Although the neutron diffraction phenomena in ferromagnetic transition metals have been successfully treated in terms of the localized spin model, this may not be regarded as a proof of the unique validity of such a model. If the correlation effect of electrons is taken into consideration by a ladder approximation, the itinerant electron model is shown to be capable of accounting for the observed diffraction equally well. The complex dynamical susceptibility is calculated with simple assumptions and the space-time correlation function of spin density is obtained from it by means of the fluctuation-dissipation theorem. The cross-section for neutron scattering derived from the correlation function explains the magnetic diffuse scattering below T_c, the magnetic critical scattering around T_c and the paramagnetic scattering above T_c. Existing data are not enough in order to discriminate between the localized and itinerant models.
- 社団法人日本物理学会の論文
- 1963-07-05
著者
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Kubo Ryogo
Department Of Physics Faculty Of Science University Of Tokyo
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Kubo Ryogo
Department Of Physics University Of Tokyo
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Kubo Ryogo
Department Of Physics Faculty Of Science And Technology Keio University
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Izuyama Takeo
Department Of Physics University Of Tokyo
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KIM DUK-JOO
Department of Physics, University of Tokyo
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Kim Duk-joo
Department Of Physics University Of Tokyo:materials Theory Group Department Of Electrical Engineerin
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Kim Duk-joo
Department Of Physics University Of Tokyo
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Izuyama Takeo
Department Of Physics Faculty Of Science University Of Tokyo
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Izuyama T.
Department of Physics, Faculty of Science University of Tokyo
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