95 citations · 650 across the 23 of their papers we have counts for
23 papers
Thermal spin transport in easy-planar -wave altermagnets controlled by magnetic field
Yuliia I. Gusieva, Kostiantyn V. Yershov, Jeroen van den Brink +1
Altermagnets constitute a novel class of collinear spin-compensated materials in which magnon branches are spin-split even in the non-relativistic limit. The latter is the result o…
Nonlinear Magnon Magnetic Moment Transport in Triangular-Lattice f-Wave Antialtermagnets
Volodymyr P. Kravchuk, Kostiantyn V. Yershov, Bastián Pradenas +6
We study the spin excitations in the frustrated coplanar 120-degree ground state of the triangular-lattice Heisenberg antiferromagnet and demonstrate that they carry a magnetic mom…
Magnon topology driven by altermagnetism
Subhankar Khatua, Volodymyr P. Kravchuk, Kostiantyn V. Yershov +1
Altermagnets present a class of fully compensated collinear magnetic order, where the two sublattices are not related merely by time-reversal combined with lattice translation or i…
Chiral magnetic excitations and domain textures of g-wave altermagnets
Volodymyr P. Kravchuk, Kostiantyn V. Yershov, Jorge I. Facio +5
Altermagnets (AMs) constitute a novel class of spin-compensated materials in which opposite-spin sublattices are connected by a crystal rotation, causing their electronic iso-energ…
Chiral breakdown engineered by mesoscale Dzyaloshinskii-Moriya interaction in biaxial magnetic nanotubes
Kostiantyn V. Yershov, Svitlana Kondovych, Denis D. Sheka
Curvilinear geometries in magnetic nanostructures provide a unique platform for exploring the interplay of symmetry, topology, and curvature in magnetization dynamics. In this work…
Curvature-induced skyrmion deformation
Artur Bichs, Kostiantyn V. Yershov, Volodymyr P. Kravchuk
Here we perform a systematic analysis of equilibrium solutions for Neel and Bloch skyrmions on a cylindrical shell and demonstrate that both experience curvature-induced deformatio…
Curvature induced magnetization of altermagnetic films
Kostiantyn V. Yershov, Olena Gomonay, Jairo Sinova +2
We consider a thin film of -wave altermagnet bent in a stretching-free manner and demonstrate that gradients of the film curvature induce a local magnetization which is approxim…
Fluctuation induced piezomagnetism in local moment altermagnets
Kostiantyn V. Yershov, Volodymyr P. Kravchuk, Maria Daghofer +1
It was recently discovered that, depending on their symmetries, collinear antiferromagnets may break spin degeneracy in momentum space, even in absence of spin-orbit coupling. Such…
Structure, control, and dynamics of altermagnetic textures
O. Gomonay, V. P. Kravchuk, R. Jaeschke-Ubiergo +5
We present a phenomenological theory of altermagnets, that captures their unique magnetization dynamics and allows modelling magnetic textures in this new magnetic phase. Focusing…
Control of magnetic response in curved stripes by tailoring cross-section
Kostiantyn V. Yershov, Denis D. Sheka
Curved magnetic architectures are key enablers of the prospective magnetic devices with respect to size, functionality and speed. By exploring geometry-governed magnetic interactio…
Dynamics of domain walls in curved antiferromagnetic wires
Kostiantyn V. Yershov
The influence of the curvature on the dynamical properties of transversal domain walls in a thin antiferromagnetic wire is studied theoretically. Equations of motion for antiferrom…
Curvature induced drift and deformation of magnetic skyrmions: comparison of ferro- and antiferromagnetic cases
Kostiantyn V. Yershov, Attila Kakay, Volodymyr P. Kravchuk
The influence of the geometrical curvature of chiral magnetic films on the static and dynamic properties of hosted skyrmions are studied theoretically. We predict the effects of th…
Curvilinear one-dimensional antiferromagnets
Oleksandr V. Pylypovskyi, Denys Y. Kononenko, Kostiantyn V. Yershov +6
Antiferromagnets host exotic quasiparticles, support high frequency excitations and are key enablers of the prospective spintronic and spin-orbitronic technologies. Here, we propos…
Domain wall diode based on functionally graded Dzyaloshinskii-Moriya interaction
Kostiantyn V. Yershov, Volodymyr P. Kravchuk, Denis D. Sheka +2
We present a general approach for studying the dynamics of domain walls in biaxial ferromagnetic stripes with functionally graded Dzyaloshinskii-Moriya interaction (DMI). By engine…
Curvature effects on phase transitions in chiral magnets
Kostiantyn V. Yershov, Volodymyr P. Kravchuk, Denis D. Sheka +1
Periodical equilibrium states of magnetization exist in chiral ferromagnetic films, if the constant of antisymmetric exchange (Dzyaloshinskii-Moriya interaction) exceeds some criti…
Spontaneous deformation of flexible ferromagnetic ribbons induced by Dzyaloshinskii-Moriya interaction
Kostiantyn V. Yershov, Volodymyr P. Kravchuk, Denis D. Sheka +2
Here, we predict the effect of the spontaneous deformation of a flexible ferromagnetic ribbon induced by Dzyaloshinskii-Moriya interaction (DMI). The geometrical form of the deform…
Magnetization induced shape transformations in flexible ferromagnetic rings
Yuri Gaididei, Kostiantyn V. Yershov, Denis D. Sheka +2
Flexible ferromagnetic rings are spin-chain magnets, in which the magnetic and mechanical subsystems are coupled. The coupling is achieved through the tangentially oriented anisotr…
Geometry-induced motion of magnetic domain walls in curved nanostripes
Kostiantyn V. Yershov, Volodymyr P. Kravchuk, Denis D. Sheka +3
Dynamics of topological magnetic textures are typically induced externally by, e.g.~magnetic fields or spin/charge currents. Here, we demonstrate the effect of the internal-to-the-…
Rashba Torque Driven Domain Wall Motion in Magnetic Helices
Oleksandr V. Pylypovskyi, Denis D. Sheka, Volodymyr P. Kravchuk +3
Manipulation of the domain wall propagation in magnetic wires is a key practical task for a number of devices including racetrack memory and magnetic logic. Recently, curvilinear e…
Curvature and torsion effects in the spin-current driven domain wall motion
Kostiantyn V. Yershov, Volodymyr P. Kravchuk, Denis D. Sheka +1
The domain wall motion along a helix-shaped nanowire is studied for the case of spin-current driving via Bazaliy-Zhang-Li mechanism. The analysis is based on collective variable ap…
Curvature induced domain wall pinning
Kostiantyn V. Yershov, Volodymyr P. Kravchuk, Denis D. Sheka +1
It is shown that a local bend of a nanowire is a source of pinning potential for a transversal head-to-head (tail-to-tail) domain wall. Eigenfrequency of the domain wall free oscil…
Torsion induced effects in magnetic nanowires
Denis D. Sheka, Volodymyr P. Kravchuk, Kostiantyn V. Yershov +1
Magnetic helix wire is one of the most simple magnetic systems which manifest properties of both curvature and torsion. There exist two equilibrium states in the helix wire with ea…
Curvature effects in vortex chirality switching
Kostiantyn V. Yershov, Volodymyr P. Kravchuk, Denis D. Sheka +1
A simple mechanism of controllable switching of magnetic vortex chirality is proposed. We consider curvilinear magnetic nanoshells of spherical geometry whose ground state is a vor…