This study demonstrates a highly energy-efficient method for quantitative magnetization switching using spin orbit torque (SOT) devices fabricated from multiferroic composites. By applying an out-of-plane electric field to a piezoelectric substrate, localized in-plane strain precisely modulates magnetization switching via the SOT effect. Harmonic Hall measurements, XMCD-PEEM, XRD, MFM, and micromagnetic simulations confirm that electric-field-induced strain enables precise control of SOT-induced magnetization switching with significantly reduced energy consumption (around 200 fJ per operation). This approach holds significant potential for next-generation spin logic devices.

Xin Li, Hanuman Singh, Jie Lin, Shuai Zhang, Bao Yi, Jyotirmoy Chatterjee, Zhuyun Xiao, Sucheta Mondal, Nobumichi Tamura, Rob N. Candler, Long You, Jeffrey Bokor, Jeongmin Hong