Dynamic Error in Magnetization Reversal due to Incoherent Switching of Nanomagnets with Strain and Spin Torque
Spin torque generated via the Spin Hall effect, and modulation of stress anisotropy of magnetostrictive nanomagnets with strain, offer two extremely energy-efficient methods of magnetization reversal. The reversal process, however, is often governed by incoherent switching dynamics that determines the error probability when switching in the presence of thermal noise at room temperature. Stochastic micromagnetic simulations are used to calculate, understand and compare energy dissipation and switching error probabilities in these two important magnetization switching methodologies.