Fig. 3: Impact of magnetic field of AFM skyrmion radius. | Nature Communications

Fig. 3: Impact of magnetic field of AFM skyrmion radius.

From: Emergence of zero-field non-synthetic single and interchained antiferromagnetic skyrmions in thin films

Fig. 3

Radius of the sublattice FM skyrmions for two-interchained AFM skyrmions a decoupled from and b coupled to the Fe magnetization. c A single case is shown for the isolated AFM skyrmion since it disappears without the inhomogeneous magnetic field emerging from the substrate. Examples of snapshots of the AFM skyrmions are illustrated as insets of the different figures. In Fe, the amount of FM skyrmions and antiskyrmions increases once applying a magnetic field, which erases the ground state spin-spiral. The coupling to the Fe magnetization affects the evolution of the AFM skyrmions as function of the magnetic field dramatically. d depicts the dependence of the AFM skyrmion under a magnetic field of 70 Tesla on the surrounding magnetic environment, by sequentially deleting one FM skyrmion or antiskyrmion in the Fe layer and relaxing the spin structure. At some point, removing any of the single FM skyrmions in the lower left of d annihilates the AFM skyrmion.

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