Transition between distinct hybrid skyrmion textures through their hexagonal-to-square crystal transformation in a polar magnet

D Singh, Y Fujishiro, S Hayami, SH Moody… - Nature …, 2023 - nature.com
Magnetic skyrmions, topological vortex-like spin textures, garner significant interest due to
their unique properties and potential applications in nanotechnology. While they typically …

High-density, spontaneous magnetic biskyrmions induced by negative thermal expansion in ferrimagnets

Y Song, T Xu, G Zhao, Y Xu, Z Zhong, X Zheng… - Science …, 2023 - science.org
Magnetic skyrmions are topologically protected quasiparticles that are promising for
applications in spintronics. However, the low stability of most magnetic skyrmions leads to …

Magnetic Interactions of the Centrosymmetric Skyrmion Material

JAM Paddison, BK Rai, AF May, S Calder, MB Stone… - Physical Review Letters, 2022 - APS
The experimental realization of magnetic skyrmion crystals in centrosymmetric materials has
been driven by theoretical understanding of how a delicate balance of anisotropy and …

Double- ground state with topological charge stripes in the centrosymmetric skyrmion candidate

GDA Wood, DD Khalyavin, DA Mayoh, J Bouaziz… - Physical Review B, 2023 - APS
GdRu 2 Si 2 is a centrosymmetric magnet in which a skyrmion lattice has recently been
discovered. Here, we investigate the magnetic structure of the zero-field ground state using …

Stability of hopfions in bulk magnets with competing exchange interactions

M Sallermann, H Jónsson, S Blügel - Physical Review B, 2023 - APS
Magnetic hopfions are string-like three-dimensional topological solitons, characterised by
the Hopf number. They serve as a fundamental prototype for three-dimensional magnetic …

Skyrmion and vortex crystals in the Hubbard model

K Kobayashi, S Hayami - Physical Review B, 2022 - APS
A mutual interplay between the charge and spin degrees of freedom in itinerant magnets
leads to a plethora of topological spin textures, such as magnetic skyrmion and vortex …

Chern insulating state with double- ordering wave vectors at the Brillouin zone boundary

S Hayami - Physical Review B, 2023 - APS
Magnetic multiple-Q states consisting of multiple spin density waves are a source of
unconventional topological spin textures, such as skyrmion and hedgehog. We theoretically …

Quantum oscillations in the centrosymmetric skyrmion-hosting magnet

N Matsuyama, T Nomura, S Imajo, T Nomoto, R Arita… - Physical Review B, 2023 - APS
We have performed magnetic torque and resistivity measurements on the centrosymmetric
skyrmion host GdRu 2 Si 2, in which the dominant magnetic interaction leading to skyrmion …

Widely-sweeping magnetic field–temperature phase diagrams for skyrmion-hosting centrosymmetric tetragonal magnets

S Hayami, Y Kato - Journal of Magnetism and Magnetic Materials, 2023 - Elsevier
We numerically investigate the stabilization mechanisms of skyrmion crystals under thermal
fluctuations and external magnetic field in itinerant centrosymmetric tetragonal magnets. By …

Ab initio exploration of short-pitch skyrmion materials: Role of orbital frustration

T Nomoto, R Arita - Journal of Applied Physics, 2023 - pubs.aip.org
In recent years, the skyrmion lattice phase with a short lattice constant has attracted attention
due to its high skyrmion density, making it a promising option for achieving high-density …