[HTML][HTML] Stabilization mechanisms of magnetic skyrmion crystal and multiple-Q states based on momentum-resolved spin interactions

S Hayami, R Yambe - Materials Today Quantum, 2024 - Elsevier
Multiple-Q states as represented by a magnetic skyrmion crystal and hedgehog crystal have
been extensively studied in recent years owing to their unconventional physical properties …

Noncoplanar orders and quantum disordered states in maple-leaf antiferromagnets

M Gembé, L Gresista, HJ Schmidt, C Hickey, Y Iqbal… - Physical Review B, 2024 - APS
A promising route towards the realization of chiral spin liquids is the quantum melting of
classically noncoplanar spin states via quantum fluctuations. In the classical realm, such …

Effective spin model in momentum space: Toward a systematic understanding of multiple- instability by momentum-resolved anisotropic exchange interactions

R Yambe, S Hayami - Physical Review B, 2022 - APS
Multiple-Q magnetic states, such as a skyrmion crystal, become a source of unusual
transport phenomena and dynamics. Recent theoretical and experimental studies clarified …

Multifarious skyrmion phases on a trilayer triangular lattice

S Hayami - Physical Review B, 2022 - APS
The instability toward a magnetic skyrmion crystal in centrosymmetric trilayer magnets is
investigated based on a spin model with layer-dependent Dzayloshinskii-Moriya interaction …

Magnetization Compensation Temperature and Frustration-Induced Topological Defects in Ferrimagnetic Antiperovskite

T Bayaraa, C Xu, L Bellaiche - Physical Review Letters, 2021 - APS
First-principles-based simulations are conducted to investigate magnetic properties and
topological spin textures in the antiperovskite Mn 4 N ferrimagnet. A magnetization …

Topological magnetic textures and long-range orders in terbium-based quasicrystal and approximant

S Watanabe - Proceedings of the National Academy of …, 2021 - National Acad Sciences
The quasicrystal (QC) possesses a unique lattice structure with rotational symmetry
forbidden in periodic crystals. The electric property is far from complete understanding. It has …

Replica symmetry breaking in the RKKY skyrmion-crystal system

K Mitsumoto, H Kawamura - Physical Review B, 2021 - APS
We study the RKKY Heisenberg model on a three-dimensional stacked-triangular lattice
under magnetic fields by extensive Monte Carlo simulations to get insight into the chiral …

Meron-antimeron crystals in noncentrosymmetric itinerant magnets on a triangular lattice

S Hayami, R Yambe - Physical Review B, 2021 - APS
Multiple-Q magnetic states often induce nontrivial topological spin textures, such as a
skyrmion and a hedgehog. We theoretically investigate yet another multiple-Q state with …

Phase degree of freedom and topology in multiple- spin textures

K Shimizu, S Okumura, Y Kato, Y Motome - Physical Review B, 2022 - APS
A periodic array of topological spin textures, such as skyrmions and hedgehogs, is called the
multiple-Q spin texture, as it is represented by a superposition of multiple spin density …

Temperature-driven transition from skyrmion to bubble crystals in centrosymmetric itinerant magnets

S Hayami - New Journal of Physics, 2021 - iopscience.iop.org
Interplay between itinerant electrons and localized spins in itinerant magnets gives rise to a
variety of noncoplanar multiple-Q spin textures, such as the skyrmion, hedgehog, meron …