Presentation Information
[10p-PB3-13]Orbital Torque in Fe3O4/Cr Heterostructures
〇(D)Tatsuki Onuma1, Hiroki Koizumi1, Hideto Yanagihara1 (1.Univ. of Tsukuba)
Keywords:
orbital torque,oxide magnet,orbital Hall effect
We investigated current-induced torque effects in Fe3O4/Cr heterostructures using second-harmonic Hall voltage measurements. A damping-like torque proportional to the current density in the Cr layer was clearly observed, and the orbital diffusion length in the Cr layer was evaluated to be approximately 6 nm from the Cr thickness dependence. This value is consistent with those reported in previous studies on orbital transport in Cr, suggesting that the current-induced torque effect observed in this system originates from the orbital current generated in the Cr layer. These results provide evidence for the emergence of orbital torque in the strongly correlated oxide magnet Fe3O4