[17a-D61-1~10] 10.3 Spin devices, magnetic memories and storages

11:15 AM - 11:30 AM JST(2:15 AM - 2:30 AM UTC)

[17a-D61-10] Out-of-plane spin-orbit torque induced by magnetostriction for Co/Ni multilayers

〇Satoshi Sugimoto¹, Yoichi Shiota², Teruo Ono², Shinya Kasai¹ (1.NIMS, 2.Kyoto Univ.)

Keywords:

spin-orbit torque,magnetization switching,ferromagnetic resonance

Design of spin polarization direction is an essential agenda for further developments of spin-orbit torque (SOT)-induced magnetization switching. Especially, out-of-plane (OOP) SOT enables zero-field switching of perpendicular magnetization with solving geometric constraints of in-plane SOT. Generations of such OOP SOTs have principally required additional symmetry breaking for thin-film layered structures, and device engineering and spin-injections by low-symmetry crystals have been investigated so far. In this study, we newly introduce an alternative approach for inducing huge OOP-SOT for Co/Ni multilayers, attributed to strong magnetostriction of nonequilibrium Ni films.