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Deformation of a Néel-type skyrmion in a weak inhomogeneous magnetic field: Magnetization Ansatz and interaction with a Pearl vortex
Physical Review B: Condensed Matter and Materials Physics. 2024. Vol. 109. No. 10. Article 104406.
In this work, we develop a theory of (meta)stable states of Néel-type skyrmions in weak nonuniform magnetic fields. We claim an Ansatz for modeling the nonsymmetric magnetization that can be implied for both analytics and numerical simulations. Our theory accounts for changes in the size of skyrmion parameters and also includes deformations from the centrally symmetric shape. The Ansatz streamlines the analytic calculation of the skyrmion free energy, enhancing the efficiency of the minimizing process. Performing the minimization in two stages, one can find all the minima, global and local, of the free energy, discovering the stable and metastable states. We apply the developed methodology to investigate the (meta)stable configurations of skyrmions influenced by the stray field of a Pearl vortex. Our study reveals the dependence of skyrmion spatial parameters on the vortex field effective strength and presents a phase diagram identifying regions where metastable configurations are predicted. Corroborated by micromagnetic simulations, our findings offer a detailed perspective on the interaction between magnetic skyrmions and superconducting vortices
Publication based on the results of:
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All-inorganic perovskite CsPbBr3 and Cs4PbBr6 nanoparticles are intensively studied for their unique optical properties, though synthesizing single-phase nanoparticles has posed challenges. Detailed synthesis method of CsPbBr3 and Cs4PbBr6 single-phase nanoparticles and their chemical and phase analysis are described. Distinctive optical characteristics, such as photoluminescence, optical band gap and the Urbach tail region, are revealed and explained within the current ...
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This review presents recent work carried out at the Landau Institute for Theoretical Physics of the Russian Academy
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This review presents recent work carried out at the Landau Institute for Theoretical Physics of the Russian Academy of Sciences on the study of the effect of superconducting vortices on the shape and position of Néel-type skyrmions in superconductor—chiral ferromagnet heterostructures. Based on analytical and numerical approaches, a number of effects caused by the inhomogeneous ...
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Apostoloff S. S., Andriyakhina E. S., Vorobyev P. A. et al., Physical Review B: Condensed Matter and Materials Physics 2023 Vol. 107 No. 22 Article L220409
We develop a theory for the coaxial configuration of a Néel-type skyrmion and a Pearl vortex in thin
superconductor-chiral ferromagnetic heterostructures. Using an exact numerical solution of the Euler-Lagrange
equation and micromagnetic simulations, we demonstrate that the inhomogeneous magnetic field of the Pearl
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