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Oscillatory interlayer coupling in spin Hall systems

Many spintronics applications consist of ultrathin magnetic and nonmagnetic multilayers and require an in-depth understanding of interfacial magnetism and spin transport. Here, we study permalloy/copper/platinum multilayer systems. We find that magnetic damping, perpendicular anisotropy, and proximi...

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Detalles Bibliográficos
Autores principales: Gonçalves, A. M., Garcia, F., Lee, H. K., Smith, A., Soledade, P. R., Passos, C. A. C., Costa, M., Souza-Neto, N. M., Krivorotov, I. N., Sampaio, L. C., Barsukov, I.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5797137/
https://www.ncbi.nlm.nih.gov/pubmed/29396498
http://dx.doi.org/10.1038/s41598-018-20685-7
Descripción
Sumario:Many spintronics applications consist of ultrathin magnetic and nonmagnetic multilayers and require an in-depth understanding of interfacial magnetism and spin transport. Here, we study permalloy/copper/platinum multilayer systems. We find that magnetic damping, perpendicular anisotropy, and proximity magnetization exhibit correlated oscillations as a function of the copper thickness. We ascribe these observations to an oscillatory interlayer coupling between permalloy and platinum. Such interlayer coupling may have a significant impact on the performance of spintronics applications.