Formation of collective spins in frustrated clusters

Abstract

Using magnetization, specific heat and neutron scattering measurements, as well as exact calculations on realistic models, the magnetic properties of the \lacuvo compound are characterized on a wide temperature range. At high temperature, this oxide is well described by strongly correlated atomic $S$=1/2 spins while decreasing the temperature it switches to a set of weakly interacting and randomly distributed entangled pseudo spins $\tilde{S}=1/2$ and $\tilde{S}=0$. These pseudo-spins are built over frustrated clusters, similar to the kagomé building block, at the vertices of a triangular superlattice, the geometrical frustration intervening then at different scales.

arXiv comment10 pages

References in corpus (11)

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Cited by in corpus (3)

• A Generalized Quantum Dimer Model Applied to the Frustrated Heisenberg Model on the Square Lattice: Emergence of a Mixed Columnar-Plaquette Phase
• Spangolite: an s=1/2 maple leaf lattice antiferromagnet?
• Inhomogeneous magnetism in the doped kagome lattice of LaCuO2.66