Spin-orbit torques and magnetization switching in Gd/Fe multilayers generated by current injection in NiCu alloys
arXiv:2312.17652 · doi:10.1063/5.0178878
Abstract
Light transition metals have recently emerged as a sustainable material class for efficient spin-charge interconversion. We report measurements of current-induced spin-orbit torques generated by NiCu alloys in perpendicularly magnetized ferrimagnetic Gd/Fe multilayers. We show that the spin-orbit torque efficiency of NiCu increases with the Ni/Cu atomic ratio, reaching values comparable to those of Pt for NiCu. Furthermore, we demonstrate magnetization switching of a 20-nm-thick Gd/Fe multilayer with a threshold current that decreases with increasing Ni concentration, similar to the spin-orbit torque efficiency. Our findings show that NiCubased magnetic heterostructures allow for efficient control of the magnetization by electric currents.
References in corpus (11)
- Electrical Manipulation of a Topological Antiferromagnetic State
- Giant Orbital Hall Effect in Transition Metals: Origin of Large Spin and Anomalous Hall Effects
- Single-shot dynamics of spin-orbit torque and spin transfer torque switching in three-terminal magnetic tunnel junctions
- Giant orbital Hall effect and orbital-to-spin conversion in 3d, 5d, and 4f metallic heterostructures
- Magnetization oscillations and waves driven by pure spin currents
- Theory of Current-Induced Angular Momentum Transfer Dynamics in Spin-Orbit Coupled Systems
- Maximizing Spin-Orbit Torque Generated by the Spin Hall Effect of Pt
- Spin-orbit torque switching of magnetic tunnel junctions for memory application
- Benchmarking of spin-orbit torque switching efficiency in Pt alloys
- Near-Unity Spin Hall Ratio in NiCu Alloys
- Spin-orbit torques and magnetization switching in Gd/Fe multilayers generated by current injection in NiCu alloys