تقرير
Role of intersublattice exchange interaction on ultrafast longitudinal and transverse magnetization dynamics in Permalloy
| العنوان: | Role of intersublattice exchange interaction on ultrafast longitudinal and transverse magnetization dynamics in Permalloy |
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| المؤلفون: | Maghraoui, A., Fras, F., Vomir, M., Brelet, Y., Halté, V., Bigot, J. Y., Barthelemy, M. |
| سنة النشر: | 2023 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Materials Science |
| الوصف: | We report about element specific measurements of ultrafast demagnetization and magnetization precession damping in Permalloy (Py) thin films. Magnetization dynamics induced by optical pump at $1.5$eV is probed simultaneously at the $M_{2,3}$ edges of Ni and Fe with High order Harmonics for moderate demagnetization rates (less than $50$%). The role of the intersublattice exchange interaction on both longitudinal and transverse dynamics is analyzed with a Landau Lifshitz Bloch description of ferromagnetically coupled Fe and Ni sublattices. It is shown that the intersublattice exchange interaction governs the dissipation during demagnetization as well as precession damping of the magnetization vector. Comment: 8 pages, 5 figures |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2303.15837 |
| رقم الأكسشن: | edsarx.2303.15837 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |