Observation of Mermin-Wagner behavior in LaFeO<sub>3</sub>/SrTiO<sub>3</sub> superlattices

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dc.contributor.authorKiaba, Michalcs
dc.contributor.authorSuter, Andreascs
dc.contributor.authorSalman, Zahercs
dc.contributor.authorProkscha, Thomascs
dc.contributor.authorChen, B.cs
dc.contributor.authorKoster, Gertjancs
dc.contributor.authorDubroka, Adamcs
dc.coverage.issue1cs
dc.coverage.volume15cs
dc.date.accessioned2025-06-16T13:56:01Z
dc.date.available2025-06-16T13:56:01Z
dc.date.issued2024-06-22cs
dc.description.abstractTwo-dimensional magnetic materials can exhibit new magnetic properties due to the enhanced spin fluctuations that arise in reduced dimension. However, the suppression of the long-range magnetic order in two dimensions due to long-wavelength spin fluctuations, as suggested by the Mermin-Wagner theorem, has been questioned for finite-size laboratory samples. Here we study the magnetic properties of a dimensional crossover in superlattices composed of the antiferromagnetic LaFeO3 and SrTiO3 that, thanks to their large lateral size, allowed examination using a sensitive magnetic probe - muon spin rotation spectroscopy. We show that the iron electronic moments in superlattices with 3 and 2 monolayers of LaFeO3 exhibit a static antiferromagnetic order. In contrast, in the superlattices with single LaFeO3 monolayer, the moments do not order and fluctuate to the lowest measured temperature as expected from the Mermin-Wagner theorem. Our work shows how dimensionality can be used to tune the magnetic properties of ultrathin films.en
dc.formattextcs
dc.format.extent1-7cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationNATURE COMMUNICATIONS. 2024, vol. 15, issue 1, p. 1-7.en
dc.identifier.doi10.1038/s41467-024-49518-0cs
dc.identifier.issn2041-1723cs
dc.identifier.other197256cs
dc.identifier.urihttps://hdl.handle.net/11012/252555
dc.language.isoencs
dc.publisherNATURE PORTFOLIOcs
dc.relation.ispartofNATURE COMMUNICATIONScs
dc.relation.urihttps://www.nature.com/articles/s41467-024-49518-0cs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/2041-1723/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectSPIN RELAXATIONen
dc.subjectDYNAMICSen
dc.subjectRANGEen
dc.subjectFILMSen
dc.subjectFIELDen
dc.titleObservation of Mermin-Wagner behavior in LaFeO<sub>3</sub>/SrTiO<sub>3</sub> superlatticesen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-197256en
sync.item.dbtypeVAVen
sync.item.insts2025.06.16 15:56:01en
sync.item.modts2025.06.16 15:33:03en
thesis.grantorVysoké učení technické v Brně. Středoevropský technologický institut VUT. Příprava a charakterizace nanostrukturcs
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Příprava a charakterizace nanostruktur