Magnon profile on SrRuO3 films studied by inelastic neutron scattering
| Autor: | Bo Yu Chen, J. W. Lynn, W. Z. Qiu, Chi-Hung Lee, Guangyong Xu, Hsin-Lei Chou, S. Yano, J. W. Chiou, Wen-Hsien Li, Shih-Jye Sun, Shi-Hsin Lin, G. D. Dwivedi, Chun-Ming Wu |
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| Rok vydání: | 2020 |
| Předmět: |
Physics
Condensed matter physics Magnon 02 engineering and technology 021001 nanoscience & nanotechnology Epitaxy Dispersion curve 01 natural sciences Inelastic neutron scattering Symmetry (physics) Condensed Matter::Materials Science Ferromagnetism Impurity 0103 physical sciences Condensed Matter::Strongly Correlated Electrons 010306 general physics 0210 nano-technology Single crystal |
| Zdroj: | Physical Review B. 101 |
| ISSN: | 2469-9969 2469-9950 |
| DOI: | 10.1103/physrevb.101.054403 |
| Popis: | In this study, the inelastic neutron scattering probe of SIKA in ANSTO is employed to investigate the magnon dispersion curve in ferromagnetic $\mathrm{SrRu}{\mathrm{O}}_{3}$ single crystal epitaxial films and to better understand the underlying mechanisms. This report presents the successful measurement of a magnon peak from the $\mathrm{SrRu}{\mathrm{O}}_{3}$ films which contained an amount of material of only 0.9 mg. We reveal one significant magnon dispersion curve along [002] following the quadratic ($E\phantom{\rule{4pt}{0ex}}\ensuremath{\propto}\phantom{\rule{4pt}{0ex}}{Q}^{2}$) relation, which shows a magnon gap of 0.32 meV. We have discussed several possible mechanisms, such as the higher symmetry structure and the impurity levels, which may contribute to this smaller gap. |
| Databáze: | OpenAIRE |
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