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dc.contributor.authorBaker, A. A.
dc.contributor.authorFigueroa, A. I.
dc.contributor.authorCollins-Mcintyre, L. J.
dc.contributor.authorVan Der Laan, G.
dc.contributor.authorHesjedal, T.
dc.identifier.citationBaker , A A , Figueroa , A I , Collins-Mcintyre , L J , Van Der Laan , G & Hesjedal , T 2015 , ' Spin pumping in ferromagnet-topological insulator-ferromagnet heterostructures. ' , Scientific Reports , vol. 5 , 7907 .
dc.identifier.otherPURE: 211058976
dc.identifier.otherPURE UUID: 2c604894-15b6-4448-a5f3-21312bd51a49
dc.identifier.otherBibtex: urn:96900205708de34c75b0763618fe46ad
dc.identifier.otherScopus: 84942445885
dc.descriptionThis publication arises from research funded by the John Fell Oxford University Press Research Fund. A.A.B. acknowledges funding from Diamond Light Source through a joint studentship and Wadham College through a senior scholarship. A.A.B. and L.C.M. acknowledge support from the EPSRC through doctoral training awards.en
dc.description.abstractTopological insulators (TIs) are enticing prospects for the future of spintronics due to their large spin-orbit coupling and dissipationless, counter-propagating conduction channels in the surface state. However, a means to interact with and exploit the topological surface state remains elusive. Here, we report a study of spin pumping at the TI-ferromagnet interface, investigating spin transfer dynamics in a spin-valve like structure using element specific time-resolved x-ray magnetic circular dichroism, and ferromagnetic resonance. Gilbert damping increases approximately linearly with increasing TI thickness, indicating efficient behaviour as a spin sink. However, layer-resolved measurements suggest that a dynamic coupling is limited. These results shed new light on the spin dynamics of this novel material class, and suggest great potential for TIs in spintronic devices, through their novel magnetodynamics that persist even up to room temperature.
dc.relation.ispartofScientific Reportsen
dc.rightsCopyright 2015 the Authors. This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder in order to reproduce the material. To view a copy of this license, visit
dc.subjectQC Physicsen
dc.titleSpin pumping in ferromagnet-topological insulator-ferromagnet heterostructures.en
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews.School of Physics and Astronomyen
dc.description.statusPeer revieweden

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