Collective Excitations of Electrons in Degenerate Bands. I : Spin Waves in Stoner's Model of Ferromagnetism

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概要

• 論文の詳細を見る

• Spin waves in the collective electron model of ferromagnetism are derived in a completely similar manner to that adopted in deriving exciton waves in insulators. The internal motion of an electron-hole pair forming the spin wave with a long wavelength is shown to be localized in the ordinary space. The frequency of the spin wave with long wavelength coincides with the result obtained by K. Yosida and T. Kasuya in the case where all electron spins are pointed toward the same direction in the ground state. It is concluded generally that spin waves break down unless there is a sufficiently large difference between the number of the electrons with up spin and the number of those with down spin.

• 理論物理学刊行会の論文
• 1960-06-25

著者

• Izuyama Takeo

  Research Institute For Fundamental Physics Kyoto University

• Izuyama Takeo

  Research Institute For Fundamental Physics Kyoto University : Department Of Physics Faculty Of Scien

• IZUYAMA Takeo

  Research Institute for Fundamental Physics, Kyoto University : Department of Physics, Faculty of Science, Tokyo University

関連論文

• Electron Interaction in Very Long Linear Conjugated Molecules. II : Elementary Excitations in a System with Small Energy Gap
• Collective Excitations of Electrons in Degenerate Bands. I : Spin Waves in Stoner's Model of Ferromagnetism
• Collective Excitation of Electrons in Degenerate Bands. II : Collective Excitations in a Metallic p-Band

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