Presentation Information

[22a-P01-25]Observation of Current-Induced Torque from Orbital Current

〇Hiroki Hayashi^1,2, Kazuya Ando^1,2,3 (1.Keio Univ., 2.KiPAS, 3.Keio CSRN)

Keywords:

Current-induced torque,Orbital current,Spin current

The objective of our study was to observe the current-induced torques, known as orbital torques, resulting from the orbital Hall effect in ferromagnetic/nonmagnetic (FM/NM) metal heterostructures. We chose Titanium (Ti) as the nonmagnetic metal due to its small spin Hall effect. Additionally, the magnitude of the orbital torque is influenced by the strength of the spin-orbit correlation in the ferromagnet. To investigate this effect, we employed Nickel (Ni) and Permalloy (Ni₈₁Fe₁₉). In our presentation, we will discuss the results regarding the generation of orbital current in light metals, as well as the induced orbital torque in ferromagnets.

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