Vertically Graded FeNi Alloys with Low Damping and a Sizeable Spin-Orbit
Torque
Vertically Graded FeNi Alloys with Low Damping and a Sizeable Spin-Orbit
Torque
Energy-efficient spintronic devices require a large spin-orbit torque (SOT) and low damping to excite magnetic precession. In conventional devices with heavy-metal/ferromagnet bilayers, reducing the ferromagnet thickness to $\sim$1 nm enhances the SOT but dramatically increases damping. Here, we investigate an alternative approach based on a 10 nm thick single-layer ferromagnet …