| Texto completo | |
| Autor(es): |
Vizarim, N. P.
;
Souza, J. C. Bellizotti
;
Reichhardt, C. J. O.
;
Reichhardt, C.
;
Venegas, P. A.
;
Beron, F.
Número total de Autores: 6
|
| Tipo de documento: | Artigo Científico |
| Fonte: | PHYSICAL REVIEW B; v. 111, n. 21, p. 11-pg., 2025-06-26. |
| Resumo | |
Many driven binary systems can exhibit laning transitions when the two species have different mobilities, such as colloidal particles with opposite charges in electric fields. Another example is pedestrian or active-matter systems, where particles moving in opposite directions form a phase-separated state that enhances the overall mobility. In this work, we use atomistic simulations to demonstrate that mixtures of skyrmions and skyrmioniums also exhibit pattern formation and laning transitions. Skyrmions move more slowly and at a finite skyrmion Hall angle compared to skyrmioniums, which move faster and without a skyrmion Hall effect. At low drives, the system forms a partially jammed phase where the skyrmioniums are dragged by the surrounding skyrmions, resulting in a finite angle of motion for the skyrmioniums. At higher drives, the system transitions into a laned state, but unlike colloidal systems, the lanes in the skyrmion-skyrmionium mixture are tilted relative to the driving direction due to the intrinsic skyrmion Hall angle. In the laned state, the skyrmionium angle of motion is reversed when it aligns with the tilted lane structure. At even higher drives, the skyrmioniums collapse into skyrmions. Below a critical skyrmion density, both textures can move independently with few collisions, but above this density, the laning state disappears entirely, and the system transitions to a skyrmion-only state. We map out the velocity and Hall responses of the different textures and identify three distinct phases: partially jammed, laned, and skyrmion-only moving crystal states. We compare our results to recent observations of tilted laning phases in pedestrian flows, where chiral symmetry breaking in the particle interactions leads to similar behavior. (AU) | |
| Processo FAPESP: | 20/07397-7 - Controle e imageamento de texturas skirmiônicas interfaciais padronizadas em sistemas multicamadas com anisotropia magnética perpendicular |
| Beneficiário: | Fanny Béron |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 24/13248-5 - Comportamento de texturas topológicas magnéticas interagindo com interfaces visando controle e estabilidade para aplicações em spintrônica |
| Beneficiário: | Nicolas Porto Vizarim |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |
| Processo FAPESP: | 17/10581-1 - Fenômenos emergentes em sistemas de dimensões reduzidas |
| Beneficiário: | Pascoal Jose Giglio Pagliuso |
| Modalidade de apoio: | Auxílio à Pesquisa - Projetos Especiais |
| Processo FAPESP: | 21/04941-0 - Comportamento Dinâmicos de Skyrmions em Filmes Quirais Infinitos na Presença de Potenciais de Aprisionamento Periódicos a Temperatura Nula |
| Beneficiário: | José Carlos Bellizotti Souza |
| Modalidade de apoio: | Bolsas no Brasil - Iniciação Científica |
| Processo FAPESP: | 24/02941-1 - Controle de texturas magnéticas interagindo com defeitos visando aplicações em spintrônica |
| Beneficiário: | Pablo Antonio Venegas Urenda |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |