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Article: Magnetic Phase Diagram of Cu4-xZnx(OH)(6)FBr Studied by Neutron-Diffraction and μSR Techniques

TitleMagnetic Phase Diagram of Cu4-xZnx(OH)(6)FBr Studied by Neutron-Diffraction and μSR Techniques
Authors
KeywordsAntiferromagnet
Triangular Lattice
Heisenberg
Issue Date2020
PublisherChinese Physical Society & Institute of Physics Publishing Ltd. The Journal's web site is located at http://iopscience.iop.org/0256-307X
Citation
Chinese Physics Letters, 2020, v. 37 n. 10, article no. 107503 How to Cite?
AbstractWe systematically investigate the magnetic properties of Cu4 – xZnx(OH)6FBr using the neutron diffraction and muon spin rotation and relaxation (μSR) techniques. Neutron-diffraction measurements suggest that the long-range magnetic order and the orthorhombic nuclear structure in the x = 0 sample can persist up to x = 0.23 and 0.43, respectively. The temperature dependence of the zero-field μSR spectra provides two characteristic temperatures, TA0 and Tλ, which are associated with the initial drop close to zero time and the long-time exponential decay of the muon relaxation, respectively. Comparison between TA0 and TM from previously reported magnetic-susceptibility measurements suggest that the former comes from the short-range interlayer-spin clusters that persist up to x = 0.82. On the other hand, the doping level where Tλ becomes zero is about 0.66, which is much higher than threshold of the long-range order, i.e., ~0.4. Our results suggest that the change in the nuclear structure may alter the spin dynamics of the kagome layers and a gapped quantum-spin-liquid state may exist above x = 0.66 with the perfect kagome planes.
Persistent Identifierhttp://hdl.handle.net/10722/293411
ISSN
2023 Impact Factor: 3.5
2023 SCImago Journal Rankings: 0.815
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorWei, Y-
dc.contributor.authorMa, X-
dc.contributor.authorFeng, Z-
dc.contributor.authorAdroja, D-
dc.contributor.authorHillier, A-
dc.contributor.authorBiswas, P-
dc.contributor.authorSenyshyn, A-
dc.contributor.authorHoser, A-
dc.contributor.authorMei, JW-
dc.contributor.authorMeng, ZY-
dc.contributor.authorLuo, H-
dc.contributor.authorShi, Y-
dc.contributor.authorLi, S-
dc.date.accessioned2020-11-23T08:16:22Z-
dc.date.available2020-11-23T08:16:22Z-
dc.date.issued2020-
dc.identifier.citationChinese Physics Letters, 2020, v. 37 n. 10, article no. 107503-
dc.identifier.issn0256-307X-
dc.identifier.urihttp://hdl.handle.net/10722/293411-
dc.description.abstractWe systematically investigate the magnetic properties of Cu4 – xZnx(OH)6FBr using the neutron diffraction and muon spin rotation and relaxation (μSR) techniques. Neutron-diffraction measurements suggest that the long-range magnetic order and the orthorhombic nuclear structure in the x = 0 sample can persist up to x = 0.23 and 0.43, respectively. The temperature dependence of the zero-field μSR spectra provides two characteristic temperatures, TA0 and Tλ, which are associated with the initial drop close to zero time and the long-time exponential decay of the muon relaxation, respectively. Comparison between TA0 and TM from previously reported magnetic-susceptibility measurements suggest that the former comes from the short-range interlayer-spin clusters that persist up to x = 0.82. On the other hand, the doping level where Tλ becomes zero is about 0.66, which is much higher than threshold of the long-range order, i.e., ~0.4. Our results suggest that the change in the nuclear structure may alter the spin dynamics of the kagome layers and a gapped quantum-spin-liquid state may exist above x = 0.66 with the perfect kagome planes.-
dc.languageeng-
dc.publisherChinese Physical Society & Institute of Physics Publishing Ltd. The Journal's web site is located at http://iopscience.iop.org/0256-307X-
dc.relation.ispartofChinese Physics Letters-
dc.subjectAntiferromagnet-
dc.subjectTriangular Lattice-
dc.subjectHeisenberg-
dc.titleMagnetic Phase Diagram of Cu4-xZnx(OH)(6)FBr Studied by Neutron-Diffraction and μSR Techniques-
dc.typeArticle-
dc.identifier.emailMeng, ZY: zymeng@hku.hk-
dc.identifier.authorityMeng, ZY=rp02524-
dc.description.naturepostprint-
dc.identifier.doi10.1088/0256-307X/37/10/107503-
dc.identifier.scopuseid_2-s2.0-85094626204-
dc.identifier.hkuros318913-
dc.identifier.volume37-
dc.identifier.issue10-
dc.identifier.spagearticle no. 107503-
dc.identifier.epagearticle no. 107503-
dc.identifier.isiWOS:000579329100001-
dc.publisher.placeChina-
dc.identifier.issnl0256-307X-

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