[21a-E216-1~4] 10.2 Fundamental and exploratory device technologies for spin

▼ [21a-E216-2] Improved accuracy of voltage-torque-driven magnetization switching using microwave-superimposed voltage pulse

〇Tatsuya Yamamoto¹, Takayuki Nozaki¹, Hiroshi Imamura¹, Shingo Tamaru¹, Kay Yakushiji¹, Hitoshi Kubota¹, Akio Fukushima¹, Yoshishige Suzuki^1,2, Shinji Yuasa¹ (1.AIST, 2.Osaka Univ.)

Keywords:voltage-controlled magnetic anisotropy, magnetization switching, magnetic tunnel junction

We investigate voltage-driven magnetization switching using microwave-superimposed voltage pulses. We show that the voltage-torque generated from a microwave voltage effectively counteracts against the magnetization damping, and that significantly improves the controllability of the magnetization switching over a wide range of pulse width.