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A low power magnetization switching scheme based on the voltage control ofmagnetic anisotropy (VCMA) is proposed. In contrast to the conventionalswitching scheme using VCMA, where the magnetic anisotropy is eliminated duringthe voltage pulse, the magnetic anisotropy is enhanced to induce precessionaround the axis close to the easy axis. After turning off the voltageproximately at a half of precession period, the magnetization relaxes to theopposite equilibrium direction. We perform numerical simulations and show thatthe pulse duration of the proposed switching scheme is as short as a few tensof pico seconds. Such a short pulse duration is beneficial for low powerconsumption because of the reduction of energy loss by Joule heating.

Low power switching of magnetization using enhanced magnetic anisotropy with short-voltage-pulse application