Planar Hall driven torque in a FM/NM/FM system

Abstract

An important goal of spintronics is to covert a charge current into a spin current with a controlled spin polarization that can exert torques on an adjacent magnetic layer. Here we demonstrate such torques in a two ferromagnet system. A CoNi multilayer is used as a spin current source in a sample with structure CoNi/Au/CoFeB. Spin torque ferromagnetic resonance is used to measure the torque on the CoFeB layer. The response as a function of the applied field angle and current is consistent with the symmetry expected for a torques produced by the planar Hall effect originating in CoNi. We find the strength of this effect to be comparable to that of the spin Hall effect in platinum, indicating that the planar Hall effect holds potential as a spin current source with a controllable polarization direction.

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• Interfacial spin-orbit torques
• Quantitative comparison of electrically induced spin and orbital polarizations in heavy-metal/3d-metal bilayers
• Unveiling the mechanism of bulk spin-orbit torques within chemically disordered Fe${}_x$Pt${}_{1-x}$ single layers
• Precessional spin-torque dynamics in biaxial antiferromagnets
• Absence of significant spin current generation in Ti/FeCoB bilayers with strong interfacial spin-orbit coupling
• Magnetic Droplet Solitons
• A Perspective on Electrical Generation of Spin Current for Magnetic Random Access Memories
• Ferrimagnet GdFeCo characterization for spin-orbitronics: large field-like and damping-like torques
• Parametric resonance of spin waves in ferromagnetic nanowires tuned by spin Hall torque
• Resonant Measurement of Non-Reorientable Spin-Orbit Torque from a Ferromagnetic Source Layer Accounting for Dynamic Spin Pumping
• Theoretical Study of Extrinsic Spin-current Generation in Ferromagnets Induced by Anisotropic Spin-flip Scattering
• Spin current symmetries generated by GdFeCo ferrimagnet across its magnetisation compensation temperature
• Perpendicularly Polarized Spin Hall Effects Induced by Spin-Dependent Scattering in Ferromagnetic Metals