99 citations · 359 across the 21 of their papers we have counts for
17 papers · 1 filter
Stability and current-driven dynamics of mixed-topology bimeron clusters
Philippe Heymes, Thomas L. Schmidt, Vladyslav M. Kuchkin
In this work, we study bimerons (in-plane skyrmions) and their clusters composed of states with mixed topological indices. These clusters provide flexibility in controlling the sky…
Three-Dimensional Shankar Skyrmions in Frustrated Antiferromagnets
Vladyslav M. Kuchkin, Ricardo Rama-Eiroa, Carlos Saji +2
We formulate a continuum theory for three-dimensional (3D) Shankar skyrmions in frustrated chiral antiferromagnets (AFs) and derive the conditions for metastable finite-size $π_3(S…
Quantum Hopfion rings in the cluster mean-field approximation
Vladyslav M. Kuchkin, Thomas L. Schmidt
We study the quantum properties of two- and three-dimensional spin textures -- -skyrmions and hopfion rings -- within the cluster mean-field approximation (CMFA). By combining…
Regularized Micromagnetic Theory for Bloch Points
Vladyslav M. Kuchkin, Andreas Haller, Andreas Michels +2
Magnetic singularities known as Bloch points (BPs) present a fundamental challenge for micromagnetic theory, which is based on the assumption of a fixed magnetization vector length…
Spin-disorder-induced angular anisotropy in polarized magnetic neutron scattering
I. Titov, M. Bersweiler, M. P. Adams +14
We experimentally report a hitherto unseen angular anisotropy in the polarized small-angle neutron scattering (SANS) cross section of a magnetically strongly inhomogeneous material…
Linked skyrmions in shifted magnetic bilayer
Sumit Ghosh, Hiroshi Katsumoto, Gustav Bihlmayer +6
Magnetic solitons have recently attracted significant attention due to their intricate physical properties and potential applications in information processing. The majority of the…
Co-existing magnetization reversal mechanisms in shakti spin ice systems
Vladyslav M. Kuchkin, Unnar B. Arnalds, Hannes Jónsson +1
The switching mechanisms in artificial spin ice systems are investigated with focus on shakti and modified shakti lattices. Minimum energy paths are calculated using the geodesic n…
Skyrmionic Schrödinger cat states in monoaxial chiral magnets
Stefan Liscak, Andreas Haller, Andreas Michels +2
We study the low-energy excitation spectra of a spin-1/2 quantum Heisenberg model with a monoaxial Dzyaloshinskii-Moriya interaction. Using the density matrix renormalization group…
Stability and Nucleation of Dipole Strings in Uniaxial Chiral Magnets
Vladyslav M. Kuchkin, Nikolai S. Kiselev, Andreas Haller +3
We report on the stability of the magnetic dipole string (DS), a three-dimensional magnetic texture formed by two coupled Bloch points with opposite topological charges, separated…
Skyrmions and antiskyrmions in monoaxial chiral magnets
Vladyslav M. Kuchkin, Nikolai S. Kiselev
We show that competition between local interactions in monoaxial chiral magnets provides the stability of two-dimensional (2D) solitons with identical energies but opposite topolog…
Heliknoton in a film of cubic chiral magnet
Vladyslav M. Kuchkin, Nikolai S. Kiselev, Filipp N. Rybakov +3
Cubic chiral magnets exhibit a remarkable diversity of two-dimensional topological magnetic textures, including skyrmions. However, the experimental confirmation of topological sta…
Tailed skyrmions -- an obscure branch of magnetic solitons
Vladyslav M. Kuchkin, Nikolai S. Kiselev, Pavel F. Bessarab
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 n…
Chiral standing spin waves in skyrmion lattice
Andrii S. Savchenko, Vladyslav M. Kuchkin, Filipp N. Rybakov +2
This work studies the resonance excitations of the three-dimensional skyrmions lattice in the finite thickness plate of an isotropic chiral magnet using spin dynamics simulations.…
Homotopy transitions and 3D magnetic solitons
Vladyslav M. Kuchkin, Nikolai S. Kiselev
This work provides a concept for three-dimensional magnetic solitons based on mapping the homotopy path between various two-dimensional solutions onto the third spatial axis. The r…
Thermal generation of droplet soliton in chiral magnet
Vladyslav M. Kuchkin, Pavel F. Bessarab, Nikolai S. Kiselev
Controlled creation of localized magnetic textures beyond conventional -skyrmions is an important problem in the field of magnetism. Here by means of spin dynamics simulations,…
Geometry and Symmetry in Skyrmion Dynamics
Vladyslav M. Kuchkin, Ksenia Chichay, Bruno Barton-Singer +4
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 surpris…
Turning chiral skyrmion inside out
Vladyslav M. Kuchkin, Nikolai S. Kiselev
The stability of two-dimensional chiral skyrmions in a tilted magnetic field is studied. It is shown that by changing the direction of the field and its magnitude, one can continuo…