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dc.contributor.authorCOEY, JOHNen
dc.contributor.authorVENKATESAN, MUNUSWAMYen
dc.date.accessioned2017-01-16T12:45:12Z
dc.date.available2017-01-16T12:45:12Z
dc.date.issued2016en
dc.date.submitted2016en
dc.identifier.citationLÿ W.M, Saha S, Wang X.R, Liu Z.Q, Gopinadhan K, Annadi A, Zeng S.W, Huang Z, Bao B.C, Cong C.X, Venkatesan M, Yu T, Coey J.M.D, Ariand, Venkatesan T, Long-range magnetic coupling across a polar insulating layer, Nature Communications, 7, 2016, 11015-en
dc.identifier.otherYen
dc.identifier.urihttp://hdl.handle.net/2262/78753
dc.descriptionPUBLISHEDen
dc.descriptionCited By :3 Export Date: 13 January 2017en
dc.description.abstractMagnetic interactions in solids are normally mediated by short-range exchange or weak dipole fields. Here we report a magnetic interaction that can propagate over long distances (∼10 nm) across a polar insulating oxide spacer. Evidence includes oscillations of magnetization, coercivity and field-cooled loop shift with the thickness of LaAlO3 in La0.67Sr0.33MnO3/LaAlO3/SrTiO3 heterostructures. Similar modifications of the hysteresis loop appear when two coupled films of La0.67Sr0.33MnO3 are separated by LaAlO3, or another polar insulator, but they are absent when the oxide spacer layer is nonpolar. The loop shift is attributed to strong spin–orbit coupling and Dzyaloshinskii–Moriya interaction at the interfaces. There is evidence from inelastic light scattering that the polar spacer mediates long-range transmission of orbital magnetization. This coupling mechanism is expected to apply for any conducting ferromagnetic oxide with mixed valence; in view of electron hopping frequency involved, it raises the prospect of terahertz tunability of magnetic coupling.en
dc.description.sponsorshipWe thank S.J. Pennycook, D.I. Khomskii and P. Stamenov for transmission electron microscopy measurement and very helpful discussions. This work is supported by the Singapore National Research Foundation (NRF) under the Competitive Research Programs (CRP award no. NRF-CRP 8-2011-06 and CRP award no. NRF-CRP10-2012-02) and the NUS FRC (AcRF Tier 1 grant nos R-144-000-346-112 and R-144-000-364-112). M.V. was supported by Science Foundation Ireland, grant no 10/IN1.13006.en
dc.format.extent11015en
dc.relation.ispartofseriesNature Communicationsen
dc.relation.ispartofseries7en
dc.rightsYen
dc.subjectMagnetic interactionsen
dc.subject.lcshMagnetic interactionsen
dc.titleLong-range magnetic coupling across a polar insulating layeren
dc.typeJournal Articleen
dc.contributor.sponsorScience Foundation Ireland (SFI)en
dc.type.supercollectionscholarly_publicationsen
dc.type.supercollectionrefereed_publicationsen
dc.identifier.peoplefinderurlhttp://people.tcd.ie/jcoeyen
dc.identifier.peoplefinderurlhttp://people.tcd.ie/venkatemen
dc.identifier.rssinternalid142899en
dc.identifier.doihttp://dx.doi.org/10.1038/ncomms11015en
dc.rights.ecaccessrightsopenAccess
dc.contributor.sponsorGrantNumber10/IN1.13006en
dc.identifier.rssurihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-84982105603&doi=10.1038%2fncomms11015&partnerID=40&md5=674d3664e59da00cbb8b07c151435478en
dc.identifier.orcid_id0000-0003-0053-8452en


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