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 language | English |
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Article number | 077204 |
Pages (from-to) | - |
Number of pages | 4 |
Journal | Physical Review Letters |
Volume | 98 |
Issue number | 7 |
DOIs | |
Publication status | Published - 13 Feb 2007 |