Intermediate phase and pseudo phase transition in an artificial spin ice model

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dc.creatorRodrigo Alves Stancioli
dc.creatorLucas Alvares da Silva Mól
dc.date.accessioned2025-02-24T18:15:16Z
dc.date.accessioned2025-09-08T23:43:33Z
dc.date.available2025-02-24T18:15:16Z
dc.date.issued2019
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Gerais
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
dc.identifier.doihttps://doi.org/10.1103/physrevb.100.024432
dc.identifier.issn2469-9969
dc.identifier.urihttps://hdl.handle.net/1843/80359
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofPhysical Review B
dc.rightsAcesso Restrito
dc.subjectTransições de fases
dc.subjectMonopolos magnéticos
dc.subjectMétodo de Monte Carlo
dc.subject.otherPhase transitions
dc.subject.otherSpin ice
dc.subject.otherMagnetic monopoles
dc.subject.otherLee-Yang & Fisher zeroes
dc.subject.otherMonte Carlo methods
dc.titleIntermediate phase and pseudo phase transition in an artificial spin ice model
dc.typeArtigo de periódico
local.citation.issue2
local.citation.volume100
local.description.resumoIn this paper we conduct Monte Carlo simulations to investigate the thermodynamic properties of a geometry of artificial spin ice recently proposed in the literature that had been termed “rewritable” spin ice, for its experimental realization allows total control over the microstates of the system. Our results show that in the thermodynamic limit a single phase transition between a fully magnetized state and a paramagnetic state exists, whereas for finite systems an intermediate phase also emerges, engendering a low temperature pseudo phase transition. This intermediate phase is characterized by large magnetic domains separated by domain walls composed of monopolelike excitations, resulting in low net magnetization values. We also show that two types of low energy excitations that behave as magnetic monopoles emerge in the system, both of which are geometrically constrained to move along a predefined path.
local.identifier.orcidhttps://orcid.org/0000-0002-6217-4861
local.identifier.orcidhttps://orcid.org/0000-0002-5001-0499
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE FÍSICA
local.publisher.initialsUFMG
local.url.externahttps://journals.aps.org/prb/abstract/10.1103/PhysRevB.100.024432

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