Bound States of Skyrmions and Merons near the Lifshitz Point.
Phys Rev Lett
; 119(20): 207201, 2017 Nov 17.
Article
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| MEDLINE
| ID: mdl-29219354
ABSTRACT
We study topological defects in anisotropic ferromagnets with competing interactions near the Lifshitz point. We show that Skyrmions and bimerons are stable in a large part of the phase diagram. We calculate Skyrmion-Skyrmion and meron-meron interactions and show that Skyrmions attract each other and form ring-shaped bound states in a zero magnetic field. At the Lifshitz point merons carrying a fractional topological charge become deconfined. These results imply that unusual topological excitations may exist in weakly frustrated magnets with conventional crystal lattices.
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Phys Rev Lett
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2017
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Article