Directional locking and the influence of obstacle density on skyrmion dynamics in triangular and honeycomb arrays

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorLos Alamos Natl Lab-
Autor(es): dc.creatorVizarim, N. P. [UNESP]-
Autor(es): dc.creatorBellizotti Souza, J. C. [UNESP]-
Autor(es): dc.creatorReichhardt, C.-
Autor(es): dc.creatorReichhardt, C. J. O.-
Autor(es): dc.creatorVenegas, P. A. [UNESP]-
Data de aceite: dc.date.accessioned2022-02-22T00:59:44Z-
Data de disponibilização: dc.date.available2022-02-22T00:59:44Z-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-07-28-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1088/1361-648X/ac0081-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/210402-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/210402-
Descrição: dc.descriptionWe numerically examine the dynamics of a single skyrmion driven over triangular and honeycomb obstacle arrays at zero temperature. The skyrmion Hall angle theta (sk), defined as the angle between the applied external drive and the direction of the skyrmion motion, increases in quantized steps or continuously as a function of the applied drive. For the obstacle arrays studied in this work, the skyrmion exhibits two main directional locking angles of theta (sk) = -30 degrees and -60 degrees. We show that these directions are privileged due to the obstacle landscape symmetry, and coincide with channels along which the skyrmion may move with few or no obstacle collisions. Here we investigate how changes in the obstacle density can modify the skyrmion Hall angles and cause some dynamic phases to appear or grow while other phases vanish. This interesting behavior can be used to guide skyrmions along designated trajectories via regions with different obstacle densities. For fixed obstacle densities, we investigate the evolution of the locked theta (sk) = -30 degrees and -60 degrees phases as a function of the Magnus force, and discuss possibilities for switching between these phases using topological selection.-
Descrição: dc.descriptionUS Department of Energy through the Los Alamos National Laboratory-
Descrição: dc.descriptionNational Nuclear Security Administration of the US Department of Energy-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionUniv Estadual Paulista UNESP, Fac Ciencias, POSMAT Programa Posgrad Ciencia & Tecnol Mat, CP 473, BR-17033360 Bauru, SP, Brazil-
Descrição: dc.descriptionUniv Estadual Paulista UNESP, Fac Ciencias, Dept Fis, CP 473, BR-17033360 Bauru, SP, Brazil-
Descrição: dc.descriptionLos Alamos Natl Lab, Theoret Div, Los Alamos, NM 87545 USA-
Descrição: dc.descriptionLos Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA-
Descrição: dc.descriptionUniv Estadual Paulista UNESP, Fac Ciencias, POSMAT Programa Posgrad Ciencia & Tecnol Mat, CP 473, BR-17033360 Bauru, SP, Brazil-
Descrição: dc.descriptionUniv Estadual Paulista UNESP, Fac Ciencias, Dept Fis, CP 473, BR-17033360 Bauru, SP, Brazil-
Descrição: dc.descriptionNational Nuclear Security Administration of the US Department of Energy: 892333218NCA000001-
Descrição: dc.descriptionFAPESP: 2017/20976-3-
Formato: dc.format9-
Idioma: dc.languageen-
Publicador: dc.publisherIop Publishing Ltd-
Relação: dc.relationJournal Of Physics-condensed Matter-
???dc.source???: dc.sourceWeb of Science-
Palavras-chave: dc.subjectmagnetism-
Palavras-chave: dc.subjectskyrmion dynamics-
Palavras-chave: dc.subjectdirectional locking-
Palavras-chave: dc.subjectpinning-
Título: dc.titleDirectional locking and the influence of obstacle density on skyrmion dynamics in triangular and honeycomb arrays-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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