抄録
Abstract
We report current-induced magnetization switching (jsw) with a nanosecond-duration pulse current (tp) in a perpendicularly magnetized nanomagnet under the Dzyaloshinskii–Moriya interaction (DMI) and investigate the effect of the Gilbert damping constant (α), tp, and DMI value (D) on jsw via micromagnetic simulations. When α is sufficiently small at tp = 1 ns, jsw for D = 1.0 erg cm−2 decreases by 42% compared to that for D = 0 erg cm−2. Further, jsw can be reduced under the DMI when α is small and tp is short, which is attributed to the twisted magnetization and increased initial magnetization angle.