Fig. 3: Dependence of the minimum energy cost of magnetization switching on switching time. | npj Spintronics

Fig. 3: Dependence of the minimum energy cost of magnetization switching on switching time.

From: Optimal field-free magnetization switching via spin-orbit torque on the surface of a topological insulator

Fig. 3

Calculated minimum energy cost Φm of magnetization switching induced by Dirac SOT as a function of 1/T for various values of the damping parameter as indicated in the legend. Dotted and dashed lines show the long and short switching time asymptotics, respectively. Inset: comparison of Φm for the Dirac and HM spin-orbit torques for α = 0.3. In all cases, β is chosen to minimize the switching cost: β = 0 for Dirac SOT and \(\beta =-\arctan \alpha\) for HM SOT.

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