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dc.contributor.authorFigueroa, A. I.
dc.contributor.authorHarrison, S. E.
dc.contributor.authorCollins-Mcintyre, L. J.
dc.contributor.authorvan der Laan, G.
dc.contributor.authorHesjedal, T.
dc.date.accessioned2017-06-14T23:35:16Z
dc.date.available2017-06-14T23:35:16Z
dc.date.issued2016-06
dc.identifier.citationFigueroa , A I , Harrison , S E , Collins-Mcintyre , L J , van der Laan , G & Hesjedal , T 2016 , ' Magnetic ordering in Ho-doped Bi 2 Te 3 topological insulator ' , Physica Status Solidi - Rapid Research Letters , vol. 10 , no. 6 , pp. 467-470 . https://doi.org/10.1002/pssr.201600061en
dc.identifier.issn1862-6254
dc.identifier.otherPURE: 242884266
dc.identifier.otherPURE UUID: 5c548c10-7d41-4444-b6c5-7b2a8808c901
dc.identifier.otherScopus: 84981765576
dc.identifier.urihttp://hdl.handle.net/10023/10997
dc.descriptionThis publication arises from research funded by the John Fell Oxford University Press (OUP) Research Fund and the Research Complex at Harwell is acknowledged for their hospitality. SEH acknowledges partial financial support from a DARPA MESO Project (No. N66001-11-1-4105) and the VPGE (Stanford University) and LCM partial financial support from EPSRC (UK) through a Doctoral Training Award.en
dc.description.abstractWe investigate the magnetic properties of Ho-doped Bi2Te3 thin films grown by molecular beam epitaxy. Analysis of the polarized X-ray absorption spectra at the Ho M5 absorption edge gives an effective 4f magnetic moment which is ∼45% of the Hund's rule ground state value. X-ray magnetic circular dichroism (XMCD) shows no significant anisotropy, which suggests that the reduced spin moment is not due to the crystal field effects, but rather the presence of non-magnetic or antiferromagnetic Ho sites. Extrapolating the temperature dependence of the XMCD measured in total electron yield and fluorescence yield mode in a field of 7 T gives a Curie-Weiss temperature of θ CW ≈ -30 K, which suggests antiferromagnetic ordering, in contrast to the paramagnetic behavior observed with SQUID magnetometry. From the anomaly of the XMCD signal at low temperatures, a Néel temperature TN between 10 K and 25 K is estimated.
dc.language.isoeng
dc.relation.ispartofPhysica Status Solidi - Rapid Research Lettersen
dc.rights© 2016, Wiley-VCH Verlag GmbH & Co . This work is made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at onlinelibrary.wiley.com / https://dx.doi.org/10.1002/pssr.201600061en
dc.subjectAntiferromagnetismen
dc.subjectDopingen
dc.subjectMagnetic orderingen
dc.subjectMolecular beam epitaxyen
dc.subjectTopological insulatorsen
dc.subjectX-ray magnetic circular dichroismen
dc.subjectQC Physicsen
dc.subjectCondensed Matter Physicsen
dc.subjectMaterials Science(all)en
dc.subjectNDASen
dc.subject.lccQCen
dc.titleMagnetic ordering in Ho-doped Bi2Te3 topological insulatoren
dc.typeJournal articleen
dc.description.versionPostprinten
dc.contributor.institutionUniversity of St Andrews.School of Physics and Astronomyen
dc.identifier.doihttps://doi.org/10.1002/pssr.201600061
dc.description.statusPeer revieweden
dc.date.embargoedUntil2017-06-14


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