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Magnon Breakdown in a Two Dimensional Triangular Lattice Heisenberg Antiferromagnet of Multiferroic LuMnO3

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dc.contributor.authorJoosung Oh-
dc.contributor.authorManh Duc Le-
dc.contributor.authorJaehong Jeong-
dc.contributor.authorLee, JH (Lee, Jung-hyun)-
dc.contributor.authorWoo, H (Woo, Hyungje)-
dc.contributor.authorSong, WY (Song, Wan-Young)-
dc.contributor.authorPerring, TG (Perring, T. G.)-
dc.contributor.authorBuyers, WJL (Buyers, W. J. L.-
dc.contributor.authorCheong, SW (Cheong, S. -W.)-
dc.contributor.authorJe Geun Park-
dc.date.available2015-04-20T06:30:19Z-
dc.date.created2014-09-30-
dc.date.issued2013-12-
dc.identifier.issn0031-9007-
dc.identifier.urihttps://pr.ibs.re.kr/handle/8788114/1192-
dc.description.abstractThe breakdown of magnons, the quasiparticles of magnetic systems, has rarely been seen. By using an inelastic neutron scattering technique, we report the observation of spontaneous magnon decay in multiferroic LuMnO3, a simple two dimensional Heisenberg triangular lattice antiferromagnet, with large spin S = 2. The origin of this rare phenomenon lies in the nonvanishing cubic interaction between magnons in the spin Hamiltonian arising from the noncollinear 120 degrees spin structure. We observed all three key features of the nonlinear effects as theoretically predicted: a rotonlike minimum, a flat mode, and a linewidth broadening, in our inelastic neutron scattering measurements of single crystal LuMnO3. Our results show that quasiparticles in a system hitherto thought of as ‘‘classical’’ can indeed break down. (c) 2013 American Physical Society-
dc.description.uri1-
dc.language영어-
dc.publisherAMER PHYSICAL SOC-
dc.titleMagnon Breakdown in a Two Dimensional Triangular Lattice Heisenberg Antiferromagnet of Multiferroic LuMnO3-
dc.typeArticle-
dc.type.rimsART-
dc.identifier.wosid000328884000013-
dc.identifier.scopusid2-s2.0-84890676101-
dc.identifier.rimsid4973ko
dc.date.tcdate2018-10-01-
dc.contributor.affiliatedAuthorJoosung Oh-
dc.contributor.affiliatedAuthorManh Duc Le-
dc.contributor.affiliatedAuthorJaehong Jeong-
dc.contributor.affiliatedAuthorJe Geun Park-
dc.identifier.doi10.1103/PhysRevLett.111.257202-
dc.identifier.bibliographicCitationPHYSICAL REVIEW LETTERS, v.111, no.25, pp.257202-
dc.citation.titlePHYSICAL REVIEW LETTERS-
dc.citation.volume111-
dc.citation.number25-
dc.citation.startPage257202-
dc.date.scptcdate2018-10-01-
dc.description.wostc26-
dc.description.scptc26-
dc.description.journalClass1-
dc.description.journalRegisteredClassscie-
dc.description.journalRegisteredClassscopus-
dc.subject.keywordPlusQUANTUM SPIN LIQUID-
dc.subject.keywordPlusSUPERCONDUCTORS-
dc.subject.keywordPlusTRANSITION-
Appears in Collections:
Center for Correlated Electron Systems(강상관계 물질 연구단) > 1. Journal Papers (저널논문)
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