Effect of Mo capping in sub-100 nm CoFeB-MgO tunnel junctions with perpendicular magnetic anisotropy

Large Field-like Spin–Orbit Torque and Enhanced Magnetization Switching Efficiency Utilizing Amorphous Mo

“…In addition, it has been demonstrated that Mo serves as a more effective coupling layer than Ta in enhancing the TMR over 200% . Recently, a lower Gilbert damping constant of 0.02 , and sub-ns STT-induced switching in Mo-based PMA films were reported compared with W-based ones, thereby suggesting its potential application in ultralow power and ultrafast memory devices. Despite extensive explorations of the magnetic properties of Mo-based magnetic heterostructures, there has been a lack of in-depth study of the spin current generation in Mo, itself, which is, however, of vital importance for engineering Mo-based p-MTJ.…”