Diffusive excitonic bands from frustrated triangular sublattice in a singlet-ground-state system

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dc.citation.articleNumber2051
dc.citation.journalTitleNature Communications
dc.citation.volumeNumber14
dc.contributor.authorGao, Bin
dc.contributor.authorChen, Tong
dc.contributor.authorWu, Xiao-Chuan
dc.contributor.authorFlynn, Michael
dc.contributor.authorDuan, Chunruo
dc.contributor.authorChen, Lebing
dc.contributor.authorHuang, Chien-Lung
dc.contributor.authorLiebman, Jesse
dc.contributor.authorLi, Shuyi
dc.contributor.authorYe, Feng
dc.contributor.authorStone, Matthew B.
dc.contributor.authorPodlesnyak, Andrey
dc.contributor.authorAbernathy, Douglas L.
dc.contributor.authorAdroja, Devashibhai T.
dc.contributor.authorDuc Le, Manh
dc.contributor.authorHuang, Qingzhen
dc.contributor.authorNevidomskyy, Andriy H.
dc.contributor.authorMorosan, Emilia
dc.contributor.authorBalents, Leon
dc.contributor.authorDai, Pengcheng
dc.date.accessioned2023-05-02T14:43:16Z
dc.date.available2023-05-02T14:43:16Z
dc.date.issued2023
dc.description.abstractMagnetic order in most materials occurs when magnetic ions with finite moments arrange in a particular pattern below the ordering temperature. Intriguingly, if the crystal electric field (CEF) effect results in a spin-singlet ground state, a magnetic order can still occur due to the exchange interactions between neighboring ions admixing the excited CEF levels. The magnetic excitations in such a state are spin excitons generally dispersionless in reciprocal space. Here we use neutron scattering to study stoichiometric Ni2Mo3O8, where Ni2+ ions form a bipartite honeycomb lattice comprised of two triangular lattices, with ions subject to the tetrahedral and octahedral crystalline environment, respectively. We find that in both types of ions, the CEF excitations have nonmagnetic singlet ground states, yet the material has magnetic order. Furthermore, CEF spin excitons from the tetrahedral sites form a dispersive diffusive pattern around the Brillouin zone boundary, likely due to spin entanglement and geometric frustrations.
dc.identifier.citationGao, Bin, Chen, Tong, Wu, Xiao-Chuan, et al.. "Diffusive excitonic bands from frustrated triangular sublattice in a singlet-ground-state system." <i>Nature Communications,</i> 14, (2023) Springer Nature: https://doi.org/10.1038/s41467-023-37669-5.
dc.identifier.digitals41467-023-37669-5
dc.identifier.doihttps://doi.org/10.1038/s41467-023-37669-5
dc.identifier.urihttps://hdl.handle.net/1911/114864
dc.language.isoeng
dc.publisherSpringer Nature
dc.rightsThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder.
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.titleDiffusive excitonic bands from frustrated triangular sublattice in a singlet-ground-state system
dc.typeJournal article
dc.type.dcmiText
dc.type.publicationpublisher version
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