The spin-orbit torque \({\tau }_{{\rm{DL}}}\) arising from spin Hall effect is often constrained by low values of spin Hall efficiency \({\theta }_{{\rm{SH}}}\). In this work, introducing phosphorus (P) into platinum (Pt) by ion implantation, thereby forming Pt(P), a significant increase in \({\theta }_{{\rm{SH}}}\) is found. This, in turn, leads to a reduction in the charge current density \({J}_{{\rm{DC}}}\) for magnetization switching. This new amorphous material achieves a remarkable 34-fold increase in \({\theta }_{{\rm{SH}}}\), from 0.034 (pure Pt) to 1.17, making it a strong candidate for energy-efficient spintronic devices and offering a pathway beyond conventional crystalline solids.
- Utkarsh Shashank
- Takafumi Tomoda
- Yasuhiro Fukuma
