Repulsion of a Néel-Type Skyrmion from a Pearl Vortex in Thin Ferromagnet

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Repulsion of a Néel-Type Skyrmion from a Pearl Vortex in Thin Ferromagnet–Superconductor Heterostructures

JETP Letters. 2022. Vol. 116. No. 11. P. 825–830.

Andriyakhina E. S., Apostoloff S., Burmistrov I. S.

In this paper we study repulsion of a Néel-type skyrmion in a chiral ferromagnetic film from a superconduct-
ing Pearl vortex due to the stray fields. Taking into account an effect of the vortex magnetic field on the sky-
rmion non-perturbatively, we find that the repulsion between them is suppressed with increase in the dimen-
sionless strength of the vortex magnetic field. This manifests itself in complicated evolution of the free energy
with increase in the vortex magnetic field and reduction of the equilibrium distance between the centers of
Néel-type skyrmion and Pearl vortex.

Research target: Physics

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