Toward Perfection: Kapellasite, Cu3Zn(OH)6Cl2, a New Model S = 1/2 Kagome Antiferromagnet

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dc.creatorColman, R. H.
dc.creatorRitter, C.
dc.creatorWills, A. S.
dc.date2008-11-25
dc.date.accessioned2026-07-07T10:36:31Z
dc.date.available2026-07-07T10:36:31Z
dc.descriptionThe search for the resonating valence bond (RVB) state continues to underpin many areas of condensed matter research. The RVB is made from the dimerisation of spins on different sites into fluctuating singlets, and was proposed by Anderson to be the reference state from which the transition to BCS superconductivity occurs. Little is known about the state experimentally, due to the scarcity of model materials. Theoretical work has put forward the S = 1/2 kagome antiferromagnet (KAFM) as a good candidate for the realization of the RVB state. In this paper we introduce a new model system, the S = 1/2 KAFM Kapellasite, Cu3Zn(OH)6Cl2. We show that its crystal structure is a good approximation to a 2-dimensional kagome antiferromagnet and that susceptibility data indicate a collapse of the magnetic moment below T = 25 K that is compatible with the spins condensing into the non-magnetic RVB state.
dc.descriptionCommunication, 3 pages, 3 figures
dc.identifierhttps://arxiv.org/abs/0811.4048
dc.identifierhttp://arxiv.org/abs/0811.4048
dc.identifierR. H. Colman, C. Ritter, A. S. Wills Chemistry of Materials 2008 20 (22), 6897-6899
dc.identifierdoi:10.1021/cm802060n
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/180079
dc.subjectStrongly Correlated Electrons
dc.subjectMaterials Science
dc.titleToward Perfection: Kapellasite, Cu3Zn(OH)6Cl2, a New Model S = 1/2 Kagome Antiferromagnet
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