Wave vector difference of magnetic Bragg reflections and low energy magnetic excitations in charge-stripe ordered La2NiO4.11

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dc.contributor.authorFreeman, PGen_AU
dc.contributor.authorGiblin, SRen_AU
dc.contributor.authorSkoulatos, Men_AU
dc.contributor.authorMole, RAen_AU
dc.contributor.authorPrabhakaran, Den_AU
dc.date.accessioned2024-12-12T23:12:23Zen_AU
dc.date.available2024-12-12T23:12:23Zen_AU
dc.date.issued2019-10-08en_AU
dc.date.statistics2024-09-25en_AU
dc.description.abstractWe report on the magnetism of charge-stripe ordered La2NiO4.11±0.01 by neutron scattering and μSR. On going towards zero energy transfer there is an observed wave vector offset in the centring of the magnetic excitations and magnetic Bragg reflections, meaning the excitations cannot be described as Goldstone modes of the magnetic order. Weak transverse field μSR measurements determine the magnetically order volume fraction is 87% from the two stripe twins, and the temperature evolution of the magnetic excitations is consistent with the low energy excitations coming from the magnetically ordered volume of the material. We will discuss how these results contrast with the proposed origin of a similar wave vector offset recently observed in a La-based cuprate, and possible origins of this effect in La2NiO4.11. © 2024 The Authors - Open Access This article is licensed under a Creative Commons Attribution 4.0.en_AU
dc.description.sponsorshipWe wish to thank J. Lord for the weak transverse field μSR measurements presented in this paper. We wish to acknowledge that crystal growth for this work was supported by the EPSRC, and the μSR measurements were funded by STFC, both part of the United Kingdom Research and Innovation organization. We wish to acknowledge this project has been supported by the European Commission under the 6th Framework Programme through Contract no.: RII3-CT-2003-50592. Part of this work was performed at the Swiss Spallation Neutron Source SINQ, at the Paul Scherrer Institute (PSI), Villigen, Switzerland, and at the ISIS Facility at the STFC Rutherford Appleton Laboratory. The authors gratefully acknowledge the financial support provided by FRM-II to perform the neutron scattering measurements at the Heinz Maier-Leibnitz Zentrum (MLZ), Garching, Germany.en_AU
dc.format.mediumElectronicen_AU
dc.identifier.articlenumber14468en_AU
dc.identifier.citationFreeman, P. G., Giblin, S. R., Skoulatos, M., Mole, R. A., & Prabhakaran, D. (2019). Wave vector difference of magnetic Bragg reflections and low energy magnetic excitations in charge-stripe ordered La2NiO4.11. Scientific Reports, 9(1), 14468. doi:10.1038/s41598-019-50904-8en_AU
dc.identifier.issn2045-2322en_AU
dc.identifier.issue1en_AU
dc.identifier.journaltitleScientific Reportsen_AU
dc.identifier.urihttps://doi.org/10.1038/s41598-019-50904-8en_AU
dc.identifier.urihttps://apo.ansto.gov.au/handle/10238/15821en_AU
dc.identifier.volume9en_AU
dc.languageEnglishen_AU
dc.language.isoenen_AU
dc.publisherSpringer Natureen_AU
dc.subjectNickelen_AU
dc.subjectLanthanumen_AU
dc.subjectMagnetismen_AU
dc.subjectBragg reflectionen_AU
dc.subjectCupratesen_AU
dc.subjectTemperature rangeen_AU
dc.subjectScatteringen_AU
dc.titleWave vector difference of magnetic Bragg reflections and low energy magnetic excitations in charge-stripe ordered La2NiO4.11en_AU
dc.typeJournal Articleen_AU
dcterms.dateAccepted2019-09-10en_AU
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