Large Damping-Like Spin-Orbit Torque And Perpendicular Magnetization Switching In Sputtered Wtex Films

We report on the study of charge-spin conversion in sputter-deposited WTex films using harmonic Hall measurements. Strong damping-like (DL) spin-orbit torque (SOT) is observed in WTex thin films with the largest SOT efficiency of 0.67x10(5) Omega (-1) m(-1) at a WTex thickness of 5nm, which quickly decreases to around zero as the thickness increases to 10nm. In comparison, the field-like SOT is around one order smaller than the DL SOT. Making use of the large DL SOT, we realize efficient current-induced perpendicular magnetization switching in WTex/Ti/CoFeB multilayers. Our findings suggest the great potential of sputter-deposited WTex in spintronics applications.