Competing charge and magnetic order in the candidate centrosymmetric skyrmion host ${\mathrm{EuGa}}_{2}{\mathrm{Al}}_{2}$

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dc.citation.articleNumberL100404en_US
dc.citation.issueNumber10en_US
dc.citation.journalTitlePhysical Review Ben_US
dc.citation.volumeNumber108en_US
dc.contributor.authorVibhakar, A. M.en_US
dc.contributor.authorKhalyavin, D. D.en_US
dc.contributor.authorMoya, J. M.en_US
dc.contributor.authorManuel, P.en_US
dc.contributor.authorOrlandi, F.en_US
dc.contributor.authorLei, S.en_US
dc.contributor.authorMorosan, E.en_US
dc.contributor.authorBombardi, A.en_US
dc.date.accessioned2024-05-03T15:51:02Zen_US
dc.date.available2024-05-03T15:51:02Zen_US
dc.date.issued2023en_US
dc.description.abstractEu(Ga1−xAlx)4 are centrosymmetric systems that have recently been identified as candidates to stabilize topologically nontrivial magnetic phases, such as skyrmion lattices. In this Letter, we present a high-resolution resonant x-ray and neutron scattering study on EuGa2Al2 that provides new details of the complex coupling between the electronic ordering phenomena. Our results unambiguously demonstrate that the system orders to form a spin density wave with moments aligned perpendicular to the direction of the propagation vector below 19.5 K, and upon further cooling below 15 K, a cycloid with moments in the ab plane, in contrast to what has been reported in the literature. We show that concomitant with the onset of the spin density wave is the suppression of the charge density wave order, indicative of a coupling between the localized 4f electrons and itinerant electron density. Furthermore, we demonstrate that the charge density wave order breaks the fourfold symmetry present in the I4/mmm crystal structure, thus declassifying these systems as square-net magnets.en_US
dc.identifier.citationVibhakar, A. M., Khalyavin, D. D., Moya, J. M., Manuel, P., Orlandi, F., Lei, S., Morosan, E., & Bombardi, A. (2023). Competing charge and magnetic order in the candidate centrosymmetric skyrmion host ${\mathrm{EuGa}}_{2}{\mathrm{Al}}_{2}$. Physical Review B, 108(10), L100404. https://doi.org/10.1103/PhysRevB.108.L100404en_US
dc.identifier.digitalPhysRevB-108-L100404en_US
dc.identifier.doihttps://doi.org/10.1103/PhysRevB.108.L100404en_US
dc.identifier.urihttps://hdl.handle.net/1911/115517en_US
dc.language.isoengen_US
dc.publisherAmerican Physical Societyen_US
dc.rightsExcept where otherwise noted, this work is licensed under a Creative Commons Attribution (CC BY) license. Permission to reuse, publish, or reproduce the work beyond the terms of the license or beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.en_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en_US
dc.titleCompeting charge and magnetic order in the candidate centrosymmetric skyrmion host ${\mathrm{EuGa}}_{2}{\mathrm{Al}}_{2}$en_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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