Novel Spin–Orbit Torque Generation at Room Temperature in an All?Oxide Epitaxial La _0.7 Sr _0.3 MnO ₃ /SrIrO ₃ System

Spin–orbit torques (SOTs) that arise from materials with large spin–orbit coupling offer a new pathway for energy-efficient and fast magnetic information storage. SOTs in conventional heavy metals topological insulators are explored extensively, while 5d transition metal oxides, which also host ions strong coupling, relatively territory the field of spintronics. An all-oxide, SrTiO3 (STO)//La0.7Sr0.3MnO3 (LSMO)/SrIrO3 (SIO) heterostructure lattice-matched crystal structure is synthesized, exhibiting an epitaxial atomically sharp interface between ferromagnetic LSMO high spin–orbit-coupled SIO. Spin-torque resonance (ST-FMR) used to probe effective magnetization SOT efficiency LSMO/SIO heterostructures grown on STO substrates. Remarkably, exhibits efficiency, ?|| = 1, retaining reasonably low shunting factor increasing by ?50%. The findings highlight significance epitaxy as powerful tool achieve explore rich physics at interface, open up designing next-generation spintronic devices.