Fig. 4: Current-induced nucleation/annihilation of SAF skyrmions. | Nature Communications

Fig. 4: Current-induced nucleation/annihilation of SAF skyrmions.

From: Skyrmions in synthetic antiferromagnets and their nucleation via electrical current and ultra-fast laser illumination

Fig. 4

a–g Sequence of STXM images acquired at the Co edge. Before each acquisition, a single 5 ns current pulse with density J = 6.2 × 1011 A m−2 is injected in the direction indicated by the red and blue arrows. The layer composition is [Pt/FM1/Ru/Pt/FM2/Ru]12 with FM1 = Co(0.2)/NiFe(0.95)/Co(0.2) and FM2 = Co(0.9) (thicknesses in nanometres). No external magnetic field is applied.

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