Resonant X-ray Scattering Study of Anisotropic Charge Distribution of Gd Ions in GdB4
| Autor: | Sang Yun Hwang, T. Y. Koo, Byeong-Gwan Cho, Sungdae Ji, Beongki Cho, Ki Bong Lee |
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| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Materials science Scattering General Physics and Astronomy Charge density 02 engineering and technology Spin–orbit interaction 021001 nanoscience & nanotechnology 01 natural sciences Molecular physics Ion Paramagnetism Phase (matter) 0103 physical sciences Computer Science::Programming Languages Condensed Matter::Strongly Correlated Electrons 0210 nano-technology Anisotropy Spin (physics) |
| Zdroj: | Journal of the Korean Physical Society. 76:537-540 |
| ISSN: | 1976-8524 0374-4884 |
| DOI: | 10.3938/jkps.76.537 |
| Popis: | Temperature dependence of anisotropic tensor susceptibility (ATS) scattering intensities of GdB4 were measured near L-edges of Gd to investigate how spin ordering affects ATS. ATS scattering intensities for L2- and L3-edges show different temperature dependence below TN. At L3-edge the intensities reflect spin order parameter while intensities at L2-edge do not show noticeable change. The difference is explained in terms of spin-orbit coupling and isotropic distribution of spin-polarized 5d states of Gd ions. Above TN ATS scattering intensities demonstrate that thermal motions enhance charge distribution anisotorpy of Gd 5d states in paramagnetic phase. |
| Databáze: | OpenAIRE |
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