2012/04/22 by Aurélien Manchon, Manchon, Aurelien · 2 citations
Engineering · Physics and Astronomy · #FOS: Physical sciences #Force Microscopy Techniques and Applications #Magnetic Field Sensors Techniques #Magnetic properties of thin films #Materials Science (cond-mat.mtrl-sci) #Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
paper · pdf · doi:10.48550/arxiv.1204.4869
openalex publication_date 2012/04/22 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Current-driven magnetization dynamics of single ferromagnets in heavy metal/ferromagnet bilayers has been recently realized. In this work, spin torque induced by so-called Rashba spin-orbit coupling and spin Hall effect are considered within a diffusive model. The dependence of the resulting torque as a function of the thicknesses of the ferromagnet and heavy metal is analyzed. We show that (i) both torques are on the form \bf T=T||\bf m×\bf y+T_\bot\bf m×(\bf y×\bf m), (ii) the ratio T||/T_\bot strongly depends on the thickness of the layers and (iii) the thickness dependence of the spin torque provides an indication of the origin of the (Rashba- or spin Hall effect-induced) spin torque .