Topological spin crystals by itinerant frustration

S Hayami, Y Motome - Journal of Physics: Condensed Matter, 2021 - iopscience.iop.org
Spin textures with nontrivial topology, such as vortices and skyrmions, have attracted
attention as a source of unconventional magnetic, transport, and optical phenomena …

Magnetic skyrmions: materials, manipulation, detection, and applications in spintronic devices

H Zhang, Y Zhang, Z Hou, M Qin, X Gao, J Liu - Materials Futures, 2023 - iopscience.iop.org
Magnetic skyrmions are vortex-like spin configurations that possess nanometric dimensions,
topological stability, and high controllability through various external stimuli. Since their first …

Insight into the structural and magnetic properties of RECo12B6 (RE= Ce, Pr, Nd) compounds: A combined experimental and theoretical investigation

Z Ma, P Xu, J Ying, Y Zhang, L Li - Acta Materialia, 2023 - Elsevier
Rare earth (RE) based RE-TM-X (TM= transition metal elements; X= P-block elements)
materials have received continuous attention due to the exhibition of various intriguing …

Square and rhombic lattices of magnetic skyrmions in a centrosymmetric binary compound

R Takagi, N Matsuyama, V Ukleev, L Yu… - Nature …, 2022 - nature.com
Magnetic skyrmions are topologically stable swirling spin textures with particle-like
character, and have been intensively studied as a candidate of high-density information bit …

Square skyrmion crystal in centrosymmetric itinerant magnets

S Hayami, Y Motome - Physical Review B, 2021 - APS
We theoretically investigate the origin of the square-type skyrmion crystal in centrosymmetric
itinerant magnets, motivated by the recent experimental findings in GdRu 2 Si 2 [ND Khanh …

Evolution of Highly Anisotropic Magnetism in the Titanium-Based Kagome Metals LnTi3Bi4 (Ln: La···Gd3+, Eu2+, Yb2+)

BR Ortiz, H Miao, DS Parker, F Yang… - Chemistry of …, 2023 - ACS Publications
Here, we present a family of titanium-based kagome metals of the form LnTi3Bi4 (Ln: La···
Gd3+, Eu2+, Yb2+). Four previously unreported compounds are presented: YbTi3Bi4 …

Topological aspects of antiferromagnets

V Bonbien, F Zhuo, A Salimath, O Ly… - Journal of Physics D …, 2021 - iopscience.iop.org
The long fascination that antiferromagnetic materials has exerted on the scientific community
over about a century has been entirely renewed recently with the discovery of several …

Noncoplanar multiple- spin textures by itinerant frustration: Effects of single-ion anisotropy and bond-dependent anisotropy

S Hayami, Y Motome - Physical Review B, 2021 - APS
We theoretically investigate multiple-Q spin textures, which are composed of superpositions
of spin density waves with different wave numbers, for an effective spin model of …

Helicity locking of a square skyrmion crystal in a centrosymmetric lattice system without vertical mirror symmetry

S Hayami, R Yambe - Physical Review B, 2022 - APS
We theoretically investigate the stability of a square skyrmion crystal (SkX) in a
centrosymmetric tetragonal lattice structure with the emphasis on the role of the magnetic …

Multiple skyrmion crystal phases by itinerant frustration in centrosymmetric tetragonal magnets

S Hayami - Journal of the Physical Society of Japan, 2022 - journals.jps.jp
A skyrmion crystal (SkX) expressed as a multiple number of spiral modulations manifests
itself not only in its peculiar magnetic texture but also in nontrivial transport properties …