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Determination of the single-ion anisotropy energy in a S = 5/2 kagome antiferromagnet using X-ray absorption spectroscopy
M. A. de Vries, T. K. Johal, A. Mirone +5
We report x-ray absorption and x-ray linear dichroism measurements at the Fe L2,3 edges of the geometrically frustrated systems of potassium and hydronium iron jarosite. Comparison…
Dzyaloshinsky-Moriya Anisotropy in the Spin-1/2 Kagomé Compound ZnCu(OH)Cl
A. Zorko, S. Nellutla, J. van Tol +7
We report the determination of the Dzyaloshinsky-Moriya interaction, the dominant magnetic anisotropy term in the \kagome spin-1/2 compound {\herbert}. Based on the analysis of the…
17O NMR study of the intrinsic magnetic susceptibility and spin dynamics of the quantum kagome antiferromagnet ZnCu3(OH)6Cl2
A. Olariu, P. Mendels, F. Bert +4
We report through 17O NMR, an unambiguous local determination of the intrinsic kagome lattice spin susceptibility as well as that created around non-magnetic defects issued from na…
Quantum dynamics and entanglement of spins on a square lattice
N. B. Christensen, H. M. Ronnow, D. F. McMorrow +6
Bulk magnetism in solids is fundamentally quantum mechanical in nature. Yet in many situations, including our everyday encounters with magnetic materials, quantum effects are maske…
The magnetic groundstate of an experimental kagomé antiferromagnet
M. A. de Vries, K. V. Kamenev, W. A. Kockelmann +2
We have carried out neutron powder-diffraction measurements on zinc paratacamite ZnCu(OH)Cl with , and studied the heat capacity in fields of up to 9 T for…
Quantum magnetism in the paratacamite family: towards an ideal kagome lattice
P. Mendels, F. Bert, M. A. de Vries +7
We report MuSR measurements on the S=1/2 (Cu2+) paratacamite Zn_xCu_{4-x}(OH)_6Cl_2 family. Despite a Weiss temperature of -300 K, the x=1 compound is found to have no transition t…