Magnetic phase recognition of artificial kagome spin ice through initial magnetization curve

Autor(es)

Cecchi, Breno Malvezzi ; Cruz, Nathan ; Knobel, Marcelo ; Pirota, Kleber Roberto

• Tipo de documento: Artigo Científico
• Fonte: PHYSICAL REVIEW B; v. 108, n. 1, p. 7-pg., 2023-07-05.

Resumo

Artificial spin ices (ASIs) are designable arrays of interacting nanomagnets that span a wide range of magnetic phases. Here, we demonstrate that the phase of an artificial kagome spin ice can be identified through its initial magnetization curve. As a proof of concept, micromagnetic simulations of these curves were performed starting from representative microstates of different phases of the system. We show that the curves are characterized by phase-specific features in such a way that a supervised classification algorithm predicts the phase of the initial microstate with good reliability. Moreover, most curves associated with paramagnetic and spin ice 1 phases are recognizable simply by visual inspection. This achievement represents a different strategy for identifying phases in ASIs that is easier and more accessible than magnetic imaging techniques normally used for this task. (AU)

• 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: 23/00137-8 - Aplicações de protocolos de reconhecimento de padrões no estudo de sistemas artificiais de spins
• Beneficiário: Nathan Dias Canabrava Cruz
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica
• Processo FAPESP: 19/23317-6 - Ondas de spin em gelos de spin artificiais formados por ferro- e antiferromagnetos: um novo representante de cristal magnônico
• Beneficiário: Breno Malvezzi Cecchi
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto