Quantum Magnetism in the Paratacamite Family: Towards an Ideal Kagome Lattice

Philippe Mendels, Fabrice Bert, Mark A. de Vries, Aretha Olariu, Andrew Harrison, J.-C. Trombe, Fabienne Duc, James S. Lord, Alex Amato, Chris Baines

Research output: Contribution to journalArticlepeer-review

Abstract

We report muon spin rotation measurements on the S=1/2 (Cu2+) paratacamite Znx Cu4 x OH 6 Cl2 family. Despite a Weiss temperature of 300 K, the x=1 compound is found to have no transition to a magnetic frozen state down to 50 mK as theoretically expected for the kagome Heisenberg antiferromagnet. We find that the limit between a dynamical and a partly frozen ground state occurs around x=0.5. For x=1, we discuss the relevance to a singlet picture.

Original languageEnglish
Article number077204
Pages (from-to)-
Number of pages4
JournalPhysical Review Letters
Volume98
Issue number7
DOIs
Publication statusPublished - 13 Feb 2007

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