Fig. 7: Calculated magnetization dynamics of Gd 4f in amorphous Fe74Gd26. | Nature Communications

Fig. 7: Calculated magnetization dynamics of Gd 4f in amorphous Fe74Gd26.

From: Tuning ultrafast demagnetization with ultrashort spin polarized currents in multi-sublattice ferrimagnets

Fig. 7

Compared STT effect (difference between positive and negative STT) for both absorbed fluences at Gd in amorphous Fe74Gd26 for 120 mJ/ cm2 incident and 3.2 mJ/cm2 absorbed fluences. The red and blue lines are simulations for opposite signs of spin polarized currents (positive and negative) combining heat-driven demagnetization dynamics with STT. Gilbert damping value α = 0.1.

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