Topological frustration of artificial spin ice

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dc.contributor.authorDrisko, Jasper
dc.contributor.authorMarsh, Thomas
dc.contributor.authorCumings, John
dc.date.accessioned2017-08-31T19:53:45Z
dc.date.available2017-08-31T19:53:45Z
dc.date.issued2017-01-13
dc.descriptionPartial funding for Open Access provided by the UMD Libraries' Open Access Publishing Fund.en_US
dc.description.abstractFrustrated systems, typically characterized by competing interactions that cannot all be simultaneously satisfied, display rich behaviours not found elsewhere in nature. Artificial spin ice takes a materials-by-design approach to studying frustration, where lithographically patterned bar magnets mimic the frustrated interactions in real materials but are also amenable to direct characterization. Here, we introduce controlled topological defects into square artificial spin ice lattices in the form of lattice edge dislocations and directly observe the resulting spin configurations. We find the presence of a topological defect produces extended frustration within the system caused by a domain wall with indeterminate configuration. Away from the dislocation, the magnets are locally unfrustrated, but frustration of the lattice persists due to its topology. Our results demonstrate the non-trivial nature of topological defects in a new context, with implications for many real systems in which a typical density of dislocations could fully frustrate a canonically unfrustrated system.en_US
dc.identifierhttps://doi.org/10.13016/M2Q23R08Z
dc.identifier.citationNature Communications, 8:14009, DOI: 10.1038/ncomms14009en_US
dc.identifier.urihttp://hdl.handle.net/1903/19708
dc.language.isoen_USen_US
dc.publisherNature Publishing Groupen_US
dc.relation.isAvailableAtA. James Clark School of Engineeringen_us
dc.relation.isAvailableAtMaterials Science & Engineeringen_us
dc.relation.isAvailableAtDigital Repository at the University of Marylanden_us
dc.relation.isAvailableAtUniversity of Maryland (College Park, MD)en_us
dc.titleTopological frustration of artificial spin iceen_US
dc.typeArticleen_US

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