Spin Waves in Systems with Long Period Helical Spin Density Waves Due to the Antisymmetric and Symmetric Exchange Interactions

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概要

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• In order to elucidate the different behaviours of the helical spin density waves(HSDW) due to the antisymmetric and symmetric exchange interactions, spin wavesin the conical spin density wave (CSDW) states and the induced ferromagnetic states(IFMS) under external magnetic fields are calcttlated by use of phenomenologicalHamiltonians with and without the antisymmetric exchange interaction. It is foundthat the spin wave spectra f'or the two types of HSDW are strongly different fromeach other, especially in the magnetic field dependences, enough to be able todistinguish them. The ESR frequencies are also investigated theoretically for bothtypes. In the light of these results, the observed magnetic field dependencies of theESR frequencies in MnSi and Fe. .Co.Si are discussed to prccve the HSDW due to theantisymmetric exchange interaction in these compounds.

• 社団法人日本物理学会の論文
• 1987-10-15

著者

• Kataoka Mitsuo

  The Research Institute For Iron Steel And Other Metals Tohoku University

• Kataoka Mitsuo

  The Research Institute For Iron Steel And Other Metals

関連論文

• Antisymmertric Spin Interaction in Metals
• Non-Phononic Mechanism of the Superconductivity in A15 Compounds
• Concentration Modulation and Stability of Long Period Superlattice in the Off-Stoichiometric Cu-Au Alloys
• Spin Waves in Systems with Long Period Helical Spin Density Waves Due to the Antisymmetric and Symmetric Exchange Interactions
• Critical Diffuse Scattering Due to the Cooperative Jahn-Teller Phase Transition
• Helical Spin Density Wave Due to Antisymmetric Exchange Interaction
• Theory of the Giant Magnetostriction in Fe_2TiO_4

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