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Article: Effect of Zn doping on the antiferromagnetism in kagome Cu4-xZnx(OH)6FBr

TitleEffect of Zn doping on the antiferromagnetism in kagome Cu4-xZnx(OH)6FBr
Authors
Issue Date2018
PublisherAmerican Physical Society. The Journal's web site is located at http://journals.aps.org/prb/
Citation
Physical Review B: covering condensed matter and materials physics, 2018, v. 98 n. 15, article no. 155127 How to Cite?
Abstract© 2018 American Physical Society. Barlowite Cu4(OH)6FBr shows three-dimensional (3D) long-range antiferromagnetism, which is fully suppressed in Cu3Zn(OH)6FBr with a kagome quantum spin liquid ground state. Here we report systematic studies on the evolution of magnetism in the Cu4-xZnx(OH)6FBr system as a function of x to bridge the two limits of Cu4(OH)6FBr(x=0) and Cu3Zn(OH)6FBr(x=1). Neutron-diffraction measurements reveal a hexagonal-to-orthorhombic structural change with decreasing temperature in the x=0 sample. While confirming the 3D antiferromagnetic nature of low-temperature magnetism, the magnetic moments on some Cu2+ sites on the kagome planes are found to be vanishingly small, suggesting strong frustration already exists in barlowite. Substitution of interlayer Cu2+ with Zn2+ with gradually increasing x completely suppresses the bulk magnetic order at around x=0.4 but leaves a local secondary magnetic order up to x∼0.8 with a slight decrease in its transition temperature. The high-temperature magnetic susceptibility and specific-heat measurements further suggest that the intrinsic magnetic properties of kagome spin liquid planes may already appear from x>0.3 samples. Our results reveal that the Cu4-xZnx(OH)6FBr may be the long-thought experimental playground for the systematic investigations of the quantum phase transition from a long-range antiferromagnet to a topologically ordered quantum spin liquid.
Persistent Identifierhttp://hdl.handle.net/10722/268608
ISSN
2017 Impact Factor: 3.813

 

DC FieldValueLanguage
dc.contributor.authorFeng, Zili-
dc.contributor.authorWei, Yuan-
dc.contributor.authorLiu, Ran-
dc.contributor.authorYan, Dayu-
dc.contributor.authorWang, Yan Cheng-
dc.contributor.authorLuo, Jianlin-
dc.contributor.authorSenyshyn, Anatoliy-
dc.contributor.authorCruz, Clarina Dela-
dc.contributor.authorYi, Wei-
dc.contributor.authorMei, Jia Wei-
dc.contributor.authorMeng, Zi Yang-
dc.contributor.authorShi, Youguo-
dc.contributor.authorLi, Shiliang-
dc.date.accessioned2019-03-25T08:00:12Z-
dc.date.available2019-03-25T08:00:12Z-
dc.date.issued2018-
dc.identifier.citationPhysical Review B: covering condensed matter and materials physics, 2018, v. 98 n. 15, article no. 155127-
dc.identifier.issn2469-9950-
dc.identifier.urihttp://hdl.handle.net/10722/268608-
dc.description.abstract© 2018 American Physical Society. Barlowite Cu4(OH)6FBr shows three-dimensional (3D) long-range antiferromagnetism, which is fully suppressed in Cu3Zn(OH)6FBr with a kagome quantum spin liquid ground state. Here we report systematic studies on the evolution of magnetism in the Cu4-xZnx(OH)6FBr system as a function of x to bridge the two limits of Cu4(OH)6FBr(x=0) and Cu3Zn(OH)6FBr(x=1). Neutron-diffraction measurements reveal a hexagonal-to-orthorhombic structural change with decreasing temperature in the x=0 sample. While confirming the 3D antiferromagnetic nature of low-temperature magnetism, the magnetic moments on some Cu2+ sites on the kagome planes are found to be vanishingly small, suggesting strong frustration already exists in barlowite. Substitution of interlayer Cu2+ with Zn2+ with gradually increasing x completely suppresses the bulk magnetic order at around x=0.4 but leaves a local secondary magnetic order up to x∼0.8 with a slight decrease in its transition temperature. The high-temperature magnetic susceptibility and specific-heat measurements further suggest that the intrinsic magnetic properties of kagome spin liquid planes may already appear from x>0.3 samples. Our results reveal that the Cu4-xZnx(OH)6FBr may be the long-thought experimental playground for the systematic investigations of the quantum phase transition from a long-range antiferromagnet to a topologically ordered quantum spin liquid.-
dc.languageeng-
dc.publisherAmerican Physical Society. The Journal's web site is located at http://journals.aps.org/prb/-
dc.relation.ispartofPhysical Review B: covering condensed matter and materials physics-
dc.titleEffect of Zn doping on the antiferromagnetism in kagome Cu4-xZnx(OH)6FBr-
dc.typeArticle-
dc.description.natureLink_to_subscribed_fulltext-
dc.identifier.doi10.1103/PhysRevB.98.155127-
dc.identifier.scopuseid_2-s2.0-85055088548-
dc.identifier.volume98-
dc.identifier.issue15-
dc.identifier.spagearticle no. 155127-
dc.identifier.epagearticle no. 155127-
dc.identifier.eissn2469-9969-

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