| Autor: |
Demidov, V. E., Evelt, M., Bessonov, V., Demokritov, S. O., Prieto, J. L., Muñoz, M., Youssef, J. Ben, Naletov, V. V., de Loubens, G., Klein, O., Collet, M., Bortolotti, P., Cros, V., Anane, A. |
| Rok vydání: |
2016 |
| Předmět: |
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| Druh dokumentu: |
Working Paper |
| Popis: |
Excitation of magnetization dynamics by pure spin currents has been recently recognized as an enabling mechanism for spintronics and magnonics, which allows implementation of spin-torque devices based on low-damping insulating magnetic materials. Here we report the first spatially-resolved study of the dynamic modes excited by pure spin current in nanometer-thick microscopic insulating Yttrium Iron Garnet disks. We show that these modes exhibit nonlinear self-broadening preventing the formation of the self-localized magnetic bullet, which plays a crucial role in the stabilization of the single-mode magnetization oscillations in all-metallic systems. This peculiarity associated with the efficient nonlinear mode coupling in low-damping materials can be among the main factors governing the interaction of pure spin currents with the dynamic magnetization in high-quality magnetic insulators. |
| Databáze: |
arXiv |
| Externí odkaz: |
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