Fig. 5: Magnetization dynamics of Fe in amorphous Fe74Gd26. | Nature Communications

Fig. 5: Magnetization dynamics of Fe in amorphous Fe74Gd26.

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

Fig. 5

Experimental and Simulated demagnetization dynamics by TR-XMCD and atomistic spin dynamics of Fe in Fe74Gd26 for 120 mJ/cm2 incident and 3.2 mJ/cm2 absorbed fluences. The laser fluence value has been adjusted to fit our experimental data. The blue (red) symbols are the experimental results for the P(AP) configurations. Solid lines in red (blue) are the simulations for the antiparallel (parallel) STT and the associated positive (negative) spin currents. In simulations the spin current polarization (SHE) is defined as “positive” for the antiparallel orientation to the Fe 3d magnetization of the Fe sub-lattice (MFe) so that the SPHE polarization (SHE) is opposite to the Co magnetization (MCo), shown by the arrows in the figure legends.

Back to article page