Spin-1/2 kagome compounds: Volborthite vs Herbertsmithite
作者： M Takigawa , Z Hiroi , H Yoshida , Y Okamoto
DOI: 10.1088/1742-6596/145/1/012002
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摘要: Two kagome compounds, volborthite Cu3V2O7(OH)2·2H2O and herbertsmithite ZnCu3(OH)6Cl2, are compared in order to derive information about the intrinsic properties of spin-1/2 antiferromagnet. Observed for a broad maximum at T ~ J/4 large finite value approached = 0 bulk magnetic susceptibility χbulk as well local one χlocal from NMR measurements. These must be antiferromagnet, similar behavior was also reported [Olariu A et al. 2008 Phys. Rev. Lett., 100 087202]. Impurity effects that may influence seriously discussed.
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