Geometry and symmetry in skyrmion dynamics

VM Kuchkin, K Chichay, B Barton-Singer, FN Rybakov… - Physical Review B, 2021 - APS
The uniform motion of chiral magnetic skyrmions induced by a spin-transfer torque displays
an intricate dependence on the skyrmions' topological charge and shape. We reveal …

Curved thin-film limits of chiral Dirichlet energies

G Di Fratta, V Slastikov - Nonlinear Analysis, 2023 - Elsevier
We investigate the curved thin-film limit of a family of perturbed Dirichlet energies in the
space of H 1 Sobolev maps defined in a tubular neighborhood of an (n− 1)-dimensional …

Tailed skyrmions—An obscure branch of magnetic solitons

VM Kuchkin, NS Kiselev, FN Rybakov… - Frontiers in …, 2023 - frontiersin.org
We report tailed skyrmions—a new class of stable soliton solutions of the 2D chiral magnet
model. Tailed skyrmions have elongated shapes and emerge in a narrow range of fields …

[PDF][PDF] Reduced energies for thin ferromagnetic films with perpendicular anisotropy

G Di Fratta, CB Muratov, VV Slastikov - arXiv preprint arXiv:2306.07634, 2023 - arxiv.org
We derive four reduced two-dimensional models that describe, at different spatial scales, the
micromagnetics of ultrathin ferromagnetic materials of finite spatial extent featuring …

Linearized von Kármán theory for incompressible magnetoelastic plates

M Bresciani - Mathematical Models and Methods in Applied …, 2021 - World Scientific
We study the asymptotic behavior, in the sense of Γ-convergence, of a thin incompressible
magnetoelastic plate, as its thickness goes to zero. We focus on the linearized von Kármán …

On symmetry of energy minimizing harmonic-type maps on cylindrical surfaces

G Di Fratta, A Fiorenza, V Slastikov - arXiv preprint arXiv:2110.08755, 2021 - arxiv.org
The paper concerns the analysis of global minimizers of a Dirichlet-type energy functional in
the class of $\mathbb {S}^ 2$-valued maps defined in cylindrical surfaces. The model …

[HTML][HTML] Renormalised energy between boundary vortices in thin-film micromagnetics with Dzyaloshinskii-Moriya interaction

R Ignat, F L'official - Nonlinear Analysis, 2025 - Elsevier
We consider a three-dimensional micromagnetic model with Dzyaloshinskii-Moriya
interaction in a thin-film regime for boundary vortices. In this regime, we prove a dimension …

Stochastic homogenization of micromagnetic energies and emergence of magnetic skyrmions

E Davoli, L D'Elia, J Ingmanns - Journal of Nonlinear Science, 2024 - Springer
We perform a stochastic homogenization analysis for composite materials exhibiting a
random microstructure. Under the assumptions of stationarity and ergodicity, we …

The mathematics of thin structures

JF Babadjian, G Di Fratta, I Fonseca, G Francfort… - Quarterly of Applied …, 2023 - ams.org
This article offers various mathematical contributions to the behavior of thin films. The
common thread is to view thin film behavior as the variational limit of a three-dimensional …

The micromagnetic energy with Dzyaloshinskii-Moriya interaction in a thin-film regime relevant for boundary vortices

F L'official - arXiv preprint arXiv:2203.15844, 2022 - arxiv.org
We consider the three-dimensional micromagnetic model with Dzyaloshinskii-Moriya
interaction in a thin-film regime. We prove the Gamma-convergence of the micromagnetic …