Fig. 4: Dependence of the minimum energy cost of magnetization switching on the ratio of the SOT coefficients. | npj Spintronics

Fig. 4: Dependence of the minimum energy cost of magnetization switching on the ratio of the SOT coefficients.

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

Fig. 4

The calculated minimum energy cost of magnetization switching Φm as a function of β for α = 0.3 and T = 20τ0 (black lines) and T → ∞ (blue lines), considering two different spin-orbit torques: Dirac (solid lines), and HM SOT (dashed lines). The red dotted line corresponds to the ratio of the DL and FL parameters ratio at which no switching occurs for the HM SOT.

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