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Article: Asymmetric ferromagnetic criticality in pyrochlore ferromagnet Lu2V2O7

TitleAsymmetric ferromagnetic criticality in pyrochlore ferromagnet Lu2V2O7
Authors
KeywordsCriticality (nuclear fission)
Ferromagnetic materials
Ferromagnetism
Iterative methods
Lutetium compounds
Issue Date2019
PublisherPublished by Elsevier B.V. and Science China Press.
Citation
Science Bulletin, 2019, v. 64 n. 17, p. 1222-1227 How to Cite?
AbstractWe study the ferromagnetic criticality of the pyrochlore magnet Lu2V2O7 at the ferromagnetic transition TC≈70K from the isotherms of magnetization M(H) via an iteration process and the Kouvel-Fisher method. The critical exponents associated with the transition are determined: β = 0.32(1), γ = 1.41(1), and δ=5.38. The validity of these critical exponents is further verified by scaling all the M(H) data in the vicinity of TC onto two universal curves in the plot of M/|ε|β versus H/|ε|β+γ, where ε=T/TC-1. The obtained β and γ values show asymmetric behaviors on the TTC sides, and are consistent with the predicted values of 3D Ising and cubic universality classes, respectively. This makes Lu2V2O7 a rare example in which the critical behaviors associated with a ferromagnetic transition belong to different universality classes. We describe the observed criticality from the Ginzburg-Landau theory with the quartic cubic anisotropy that microscopically originates from the anti-symmetric Dzyaloshinskii-Moriya interaction as revealed by recent magnon thermal Hall effect and theoretical investigations. © 2019 Science China Press
Persistent Identifierhttp://hdl.handle.net/10722/278605
ISSN
2017 Impact Factor: 4.136
2015 SCImago Journal Rankings: 0.477

 

DC FieldValueLanguage
dc.contributor.authorSu, N-
dc.contributor.authorLi, F-
dc.contributor.authorJiao, Y-
dc.contributor.authorLiu, Z-
dc.contributor.authorSun, J-
dc.contributor.authorWang, B-
dc.contributor.authorSui, Y-
dc.contributor.authorZhou, H-
dc.contributor.authorChen, G-
dc.contributor.authorCheng, J-
dc.date.accessioned2019-10-21T02:10:38Z-
dc.date.available2019-10-21T02:10:38Z-
dc.date.issued2019-
dc.identifier.citationScience Bulletin, 2019, v. 64 n. 17, p. 1222-1227-
dc.identifier.issn2095-9273-
dc.identifier.urihttp://hdl.handle.net/10722/278605-
dc.description.abstractWe study the ferromagnetic criticality of the pyrochlore magnet Lu2V2O7 at the ferromagnetic transition TC≈70K from the isotherms of magnetization M(H) via an iteration process and the Kouvel-Fisher method. The critical exponents associated with the transition are determined: β = 0.32(1), γ = 1.41(1), and δ=5.38. The validity of these critical exponents is further verified by scaling all the M(H) data in the vicinity of TC onto two universal curves in the plot of M/|ε|β versus H/|ε|β+γ, where ε=T/TC-1. The obtained β and γ values show asymmetric behaviors on the T<TC and the T>TC sides, and are consistent with the predicted values of 3D Ising and cubic universality classes, respectively. This makes Lu2V2O7 a rare example in which the critical behaviors associated with a ferromagnetic transition belong to different universality classes. We describe the observed criticality from the Ginzburg-Landau theory with the quartic cubic anisotropy that microscopically originates from the anti-symmetric Dzyaloshinskii-Moriya interaction as revealed by recent magnon thermal Hall effect and theoretical investigations. © 2019 Science China Press-
dc.languageeng-
dc.publisherPublished by Elsevier B.V. and Science China Press.-
dc.relation.ispartofScience Bulletin-
dc.subjectCriticality (nuclear fission)-
dc.subjectFerromagnetic materials-
dc.subjectFerromagnetism-
dc.subjectIterative methods-
dc.subjectLutetium compounds-
dc.titleAsymmetric ferromagnetic criticality in pyrochlore ferromagnet Lu2V2O7-
dc.typeArticle-
dc.identifier.emailChen, G: gangchen@hku.hk-
dc.identifier.authorityChen, G=rp02491-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.scib.2019.06.025-
dc.identifier.scopuseid_2-s2.0-85069910283-
dc.identifier.hkuros307292-
dc.identifier.volume64-
dc.identifier.issue17-
dc.identifier.spage1222-
dc.identifier.epage1227-
dc.publisher.placeUnited States-

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