Revisiting $μ$SR Studies of Ion Dynamics in the Light of Extended Kubo-Toyabe Model
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arXiv
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| Hauptverfasser: | , |
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| Format: | Preprint |
| Veröffentlicht: |
2025
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| _version_ | 1866911717133385728 |
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| author | Ito, Takashi U. Kadono, Ryosuke |
| author_facet | Ito, Takashi U. Kadono, Ryosuke |
| contents | The dynamical Kubo-Toyabe (dKT) function is extended to describe the spin relaxation under the coexisting dynamical and static internal magnetic fields. A detailed re-evaluation of the previous $μ^\pm$SR data in Na$_x$CoO$_2$ using this function disfavors the conventional interpretation based on sodium-ion diffusion and instead supports the $μ^+$ self-diffusion scenario. This also resolves the long-standing inconsistencies in the dKT-function-based $μ$SR studies on ion diffusion from the viewpoint of classical over-barrier-jump mechanism. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_05968 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Revisiting $μ$SR Studies of Ion Dynamics in the Light of Extended Kubo-Toyabe Model Ito, Takashi U. Kadono, Ryosuke Materials Science The dynamical Kubo-Toyabe (dKT) function is extended to describe the spin relaxation under the coexisting dynamical and static internal magnetic fields. A detailed re-evaluation of the previous $μ^\pm$SR data in Na$_x$CoO$_2$ using this function disfavors the conventional interpretation based on sodium-ion diffusion and instead supports the $μ^+$ self-diffusion scenario. This also resolves the long-standing inconsistencies in the dKT-function-based $μ$SR studies on ion diffusion from the viewpoint of classical over-barrier-jump mechanism. |
| title | Revisiting $μ$SR Studies of Ion Dynamics in the Light of Extended Kubo-Toyabe Model |
| topic | Materials Science |
| url | https://arxiv.org/abs/2508.05968 |