Emergent magnetic monopole dynamics in macroscopically degenerate artificial spin ice

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Farhan, Alan
dc.contributor.author Saccone, Michael
dc.contributor.author Petersen, Charlotte F.
dc.contributor.author Dhuey, Scott
dc.contributor.author Chopdekar, Rajesh V.
dc.contributor.author Huang, Yen Lin
dc.contributor.author Kent, Noah
dc.contributor.author Chen, Zuhuang
dc.contributor.author Alava, Mikko J.
dc.contributor.author Lippert, Thomas
dc.contributor.author Scholl, Andreas
dc.contributor.author van Dijken, Sebastiaan
dc.date.accessioned 2019-02-25T08:47:40Z
dc.date.available 2019-02-25T08:47:40Z
dc.date.issued 2019-02-08
dc.identifier.citation Farhan , A , Saccone , M , Petersen , C F , Dhuey , S , Chopdekar , R V , Huang , Y L , Kent , N , Chen , Z , Alava , M J , Lippert , T , Scholl , A & van Dijken , S 2019 , ' Emergent magnetic monopole dynamics in macroscopically degenerate artificial spin ice ' Science Advances , vol. 5 , no. 2 , eaav6380 , pp. 1-8 . https://doi.org/10.1126/sciadv.aav6380 en
dc.identifier.issn 2375-2548
dc.identifier.other PURE UUID: 6c75f176-82c5-4fb3-884f-6932d3524ff0
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/emergent-magnetic-monopole-dynamics-in-macroscopically-degenerate-artificial-spin-ice(6c75f176-82c5-4fb3-884f-6932d3524ff0).html
dc.identifier.other PURE LINK: http://www.scopus.com/inward/record.url?scp=85061305106&partnerID=8YFLogxK
dc.identifier.other PURE FILEURL: https://research.aalto.fi/files/32154859/eaav6380.full.pdf
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/36779
dc.description.abstract Magnetic monopoles, proposed as elementary particles that act as isolated magnetic south and north poles, have long attracted research interest as magnetic analogs to electric charge. In solid-state physics, a classical analog to these elusive particles has emerged as topological excitations within pyrochlore spin ice systems. We present the first real-time imaging of emergent magnetic monopole motion in a macroscopically degenerate artificial spin ice system consisting of thermally activated Ising-type nanomagnets lithographically arranged onto a pre-etched silicon substrate. A real-space characterization of emergent magnetic monopoles within the framework of Debye-Hückel theory is performed, providing visual evidence that these topological defects act like a plasma of Coulomb-type magnetic charges. In contrast to vertex defects in a purely two-dimensional artificial square ice, magnetic monopoles are free to evolve within a divergence-free vacuum, a magnetic Coulomb phase, for which features in the form of pinch-point singularities in magnetic structure factors are observed. en
dc.format.extent 1-8
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation.ispartofseries Science Advances en
dc.relation.ispartofseries Volume 5, issue 2 en
dc.rights openAccess en
dc.subject.other Physics and Astronomy (miscellaneous) en
dc.subject.other 114 Physical sciences en
dc.title Emergent magnetic monopole dynamics in macroscopically degenerate artificial spin ice en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Lawrence Berkeley National Laboratory
dc.contributor.department University of California at Santa Cruz
dc.contributor.department Department of Applied Physics
dc.contributor.department University of California at Berkeley
dc.contributor.department Harbin Institute of Technology
dc.contributor.department Paul Scherrer Institute
dc.contributor.department Nanomagnetism and Spintronics
dc.subject.keyword Physics and Astronomy (miscellaneous)
dc.subject.keyword 114 Physical sciences
dc.identifier.urn URN:NBN:fi:aalto-201902251936
dc.identifier.doi 10.1126/sciadv.aav6380
dc.type.version publishedVersion

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