Satellite Holmium M-Edge Spectra from the Magnetic Phase via Resonant Soft X-Ray Scattering(Condensed matter: electronic structure and electrical, magnetic, and optical properties)

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概要

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• Developing an expression of resonant x-ray scattering (RXS) amplitude which is convenient for investigating the contributions from the higher rank tensor on the basis of a localized electron picture, we analyze the RXS spectra from the magnetic phases of Ho near the M_<4,5> absorption edges. At the M_5 edge in the uniform helical phase, the calculated spectra of the absorption coefficient, the RXS intensities at the first and second satellite spots capture the properties the experimental data possess, such as the spectral shapes and the peak positions. This demonstrates the plausibility of the adoption of the localized picture in this material and the effectiveness of the spectral shape analysis. The latter point is markedly valuable since the azimuthal angle dependence, which is one of the most useful informations RXS can provides, is lacking in the experimental conditions. Then, by focusing on the temperature dependence of the spectral shape at the second satellite spot, we expect that the spectrum is the contribution of the pure rank two profile in the uniform helical and the conical phases while that is dominated by the rank one profile in the intermediate temperature phase, so-called spin slip phase. The change of the spectral shape as a function of temperature indicates a direct evidence of the change of magnetic structures undergoing. Furthermore, we predict that the intensity, which is the same order observed at the second satellite spot, is expected at the fourth satellite spot from the conical phase in the electric dipolar transition.

• 社団法人日本物理学会の論文
• 2008-08-15

著者

• IGARASHI Jun-ichi

  Faculty of Science, Ibaraki University

• NAGAO Tatsuya

  Faculty of Engineering, Gunma University

• Nagao Tatsuya

  Faculty Of Engineering Gunma University

• Igarashi Jun-ichi

  Faculty Of Engineering Gunma University

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