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What are the limitations for afm skyrmions? 


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Antiferromagnetic (AFM) skyrmions face limitations due to their compactness, hindering their ability to reach velocities where relativistic effects occur in rapidly moving domain walls (DWs) . Additionally, AFM skyrmions exhibit a zero Magnus force, making them promising for spintronic applications, but their stabilization in different geometries poses challenges . While synthetic AFM structures have been successful in stabilizing AFM skyrmions, the investigation of AFM topological magnetism in van der Waals (vdW) synthetic antiferromagnets is still limited . Understanding the interplay between various interactions and magnetic anisotropy is crucial for identifying and designing new topological magnetic materials for AFM spintronics, emphasizing the need for further research to overcome the limitations faced by AFM skyrmions .

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AFM skyrmions' stability can be affected by magnetic interactions, anisotropy, and external magnetic fields. They deform into stripe domains beyond a critical field strength.
Limitations for AFM skyrmions include deflection in traditional FM skyrmions when driven by current, hindering spintronic applications, unlike AFM skyrmions with zero Magnus force.
AFM skyrmions act as infinite potential barriers for electrons due to their local antiferromagnetic nature, preventing electronic penetration into their core.
AFM skyrmions face limitations such as the skyrmion Hall effect and dipolar field-induced large size, motivating research on vdW synthetic antiferromagnets for improved control and stability.
Limitations for AFM skyrmions include distortion at high speeds due to gyrotropic forces imbalance, preventing relativistic effects similar to those observed in DWs, hindering their velocity potential.

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