Helical Spin Density Wave Due to Antisymmetric Exchange Interaction
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概要
- 論文の詳細を見る
For the spin systems with both the symmetric exchange interaction (SEI) and the antisymmetric exchange interaction (AEI) (the Dzyaloshinsky-Moriya interaction), the relative stability between the ferromagnetic state (FMS) and the helical spin density wave (HSDW) is discussed phenomenologically. The argu-ments are made to the spin systems of which the spin structures are described by the spin density S(r) varying slowly with the position r and the SEI is favorable to the FMS. For the 21 types of crystal synmetry with the isogonal point groups having no inversion symmetry, the characteristics of the instability of the FMS are investigated. By use of the Landau free energy obtained for crystals with the isogonal point groups T and O, the magnetization process, the magnetic phase diagram, and the intensity of the neutron diffuse scattering are calculated. A comparison between the calculated results and the experiments on MnSi is also grven.
- 社団法人日本物理学会の論文
- 1981-12-15
著者
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Kataoka Mitsuo
The Research Institute For Iron Steel And Other Metals Tohoku University
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Kataoka Mitsuo
The Research Institute For Iron Steel And Other Metals
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Nakanishi Osamu
The Research Institute For Iron Steel And Other Metals Tohoku University
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