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| Título: | Full control of the spin-wave damping in a magnetic insulator using spin-orbit torque |
Autor: | Hamadeh, A.; Muñoz Sánchez, Manuel CSIC ORCID; Klein, Oliver | Fecha de publicación: | 7-nov-2014 | Editor: | American Physical Society | Citación: | Physical Review Letters 113: 197203 (2014) | Resumen: | © 2014 American Physical Society. It is demonstrated that the threshold current for damping compensation can be reached in a 5 μm diameter YIG(20 nm)|Pt(7 nm) disk. The demonstration rests upon the measurement of the ferromagnetic resonance linewidth as a function of Idc using a magnetic resonance force microscope (MRFM). It is shown that the magnetic losses of spin-wave modes existing in the magnetic insulator can be reduced or enhanced by at least a factor of 5 depending on the polarity and intensity of an in-plane dc current Idc flowing through the adjacent normal metal with strong spin-orbit interaction. Complete compensation of the damping of the fundamental mode by spin-orbit torque is reached for a current density of ∼3×1011 A⋅m−2, in agreement with theoretical predictions. At this critical threshold the MRFM detects a small change of static magnetization, a behavior consistent with the onset of an auto-oscillation regime. | Descripción: | Hamadeh, A. et al. | Versión del editor: | http://dx.doi.org/10.1103/PhysRevLett.113.197203 | URI: | http://hdl.handle.net/10261/132430 | DOI: | 10.1103/PhysRevLett.113.197203 | Identificadores: | e-issn: 1079-7114 issn: 0031-9007 |
| Aparece en las colecciones: | (IMN-CNM) Artículos |
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| spin-wave_damping_Hamadeh.pdf | 787,48 kB | Adobe PDF |  Visualizar/Abrir |
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