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Article: Intertwined dipolar and multipolar order in the triangular-lattice magnet TmMgGaO4

TitleIntertwined dipolar and multipolar order in the triangular-lattice magnet TmMgGaO4
Authors
Keywordselectron density
energy dissipation
magnetic field
parameterization
phase transition
Issue Date2019
PublisherNature Research (part of Springer Nature): Fully open access journals. The Journal's web site is located at http://www.nature.com/ncomms/index.html
Citation
Nature Communications, 2019, v. 10, p. article no. 4530 How to Cite?
AbstractA phase transition is often accompanied by the appearance of an order parameter and symmetry breaking. Certain magnetic materials exhibit exotic hidden-order phases, in which the order parameters are not directly accessible to conventional magnetic measurements. Thus, experimental identification and theoretical understanding of a hidden order are difficult. Here we combine neutron scattering and thermodynamic probes to study the newly discovered rare-earth triangular-lattice magnet TmMgGaO4. Clear magnetic Bragg peaks at K points are observed in the elastic neutron diffraction measurements. More interesting, however, is the observation of sharp and highly dispersive spin excitations that cannot be explained by a magnetic dipolar order, but instead is the direct consequence of the underlying multipolar order that is “hidden” in the neutron diffraction experiments. We demonstrate that the observed unusual spin correlations and thermodynamics can be accurately described by a transverse field Ising model on the triangular lattice with an intertwined dipolar and ferro-multipolar order.
Persistent Identifierhttp://hdl.handle.net/10722/279473
ISSN
2017 Impact Factor: 12.353
2015 SCImago Journal Rankings: 6.539
PubMed Central ID

 

DC FieldValueLanguage
dc.contributor.authorShen, Y-
dc.contributor.authorLiu, C-
dc.contributor.authorQin, Y-
dc.contributor.authorShen, S-
dc.contributor.authorLi, YD-
dc.contributor.authorBewley, R-
dc.contributor.authorSchneidewind, A-
dc.contributor.authorChen, G-
dc.contributor.authorZhao, J-
dc.date.accessioned2019-11-01T07:18:03Z-
dc.date.available2019-11-01T07:18:03Z-
dc.date.issued2019-
dc.identifier.citationNature Communications, 2019, v. 10, p. article no. 4530-
dc.identifier.issn2041-1723-
dc.identifier.urihttp://hdl.handle.net/10722/279473-
dc.description.abstractA phase transition is often accompanied by the appearance of an order parameter and symmetry breaking. Certain magnetic materials exhibit exotic hidden-order phases, in which the order parameters are not directly accessible to conventional magnetic measurements. Thus, experimental identification and theoretical understanding of a hidden order are difficult. Here we combine neutron scattering and thermodynamic probes to study the newly discovered rare-earth triangular-lattice magnet TmMgGaO4. Clear magnetic Bragg peaks at K points are observed in the elastic neutron diffraction measurements. More interesting, however, is the observation of sharp and highly dispersive spin excitations that cannot be explained by a magnetic dipolar order, but instead is the direct consequence of the underlying multipolar order that is “hidden” in the neutron diffraction experiments. We demonstrate that the observed unusual spin correlations and thermodynamics can be accurately described by a transverse field Ising model on the triangular lattice with an intertwined dipolar and ferro-multipolar order.-
dc.languageeng-
dc.publisherNature Research (part of Springer Nature): Fully open access journals. The Journal's web site is located at http://www.nature.com/ncomms/index.html-
dc.relation.ispartofNature Communications-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.subjectelectron density-
dc.subjectenergy dissipation-
dc.subjectmagnetic field-
dc.subjectparameterization-
dc.subjectphase transition-
dc.titleIntertwined dipolar and multipolar order in the triangular-lattice magnet TmMgGaO4-
dc.typeArticle-
dc.identifier.emailChen, G: gangchen@hku.hk-
dc.identifier.authorityChen, G=rp02491-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1038/s41467-019-12410-3-
dc.identifier.pmid31594940-
dc.identifier.pmcidPMC6783407-
dc.identifier.scopuseid_2-s2.0-85073058893-
dc.identifier.hkuros308345-
dc.identifier.volume10-
dc.identifier.spagearticle no. 4530-
dc.identifier.epagearticle no. 4530-
dc.publisher.placeUnited Kingdom-

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