Spangolite: an s=1/2 maple leaf lattice antiferromagnet?

Abstract

Spangolite, Cu6Al(SO4)(OH)12Cl.3H2O, is a hydrated layered copper sulphate mineral. The Cu2+ ions of each layer form a systematically depleted triangular lattice which approximates a maple leaf lattice. We present details of the crystal structure, which suggest that in spangolite this lattice actually comprises two species of edge linked trimers with different exchange parameters. However, magnetic susceptibility measurements show that despite the structural trimers, the magnetic properties are dominated by dimerization. The high temperature magnetic moment is strongly reduced below that expected for the six s=1/2 in the unit cell.

Accepted for JPCM Frustrated Magnetism special issue, added reference [5] in replacement

References in corpus (3)

• Singlet-triplet dispersion reveals additional frustration in the triangular dimer compound Ba${}_3$Mn${}_2$O${}_8$
• Dimers on the Triangular Kagome Lattice
• Formation of collective spins in frustrated clusters

Cited by in corpus (23)

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• The spin-half Heisenberg antiferromagnet on two Archimedian lattices: From the bounce lattice to the maple-leaf lattice and beyond
• Another Exact Ground State of a 2D Quantum Antiferromagnet
• The Interplay Between Lattice Topology, Frustration, and Spin Quantum Number in Quantum Antiferromagnets on Archimedean Lattices
• Quantum antiferromagnet bluebellite comprising a maple-leaf lattice made of spin-1/2 Cu${}^{2+}$ ions
• Magnetism of coupled spin tetrahedra in ilinskite-type KCu${}_5$O${}_2$(SeO${}_3$)${}_2$Cl${}_3$
• Frustrated Magnetism of the Maple-Leaf-Lattice Antiferromagnet MgMn${}_3$O${}_7$$\cdot$3H${}_2$O
• Candidate quantum disordered intermediate phase in the Heisenberg antiferromagnet on the maple-leaf lattice
• Noncoplanar orders and quantum disordered states in maple-leaf (anti)ferromagnets
• Dimensional reduction in quantum spin-1/2 system on a 1/7-depleted triangular lattice
• Copper Tellurium Oxides - A Playground for Magnetism
• Effective spin-1 breathing kagome Hamiltonian induced by the exchange hierarchy in the maple leaf mineral bluebellite
• Candidate quantum spin liquids on the maple-leaf lattice
• Chiral crossroads in $\mathrm{H}{\mathrm{o}}_3\mathrm{Sc}{\mathrm{O}}_6$: a tale of frustration in maple leaf lattice
• Ergodic Archimedean dimers
• Symmetry breaking and competing valence bond states in the star lattice Heisenberg antiferromagnet
• Unconventional orders in the maple-leaf ferro-antiferromagnetic Heisenberg model
• Inverse Hamiltonian design of highly-entangled quantum systems
• Spin Nernst and thermal Hall effects of topological triplons in quantum dimer magnets on the maple-leaf and star lattices
• Thermodynamics of the Heisenberg antiferromagnet on the maple-leaf lattice
• Crystallography-driven molecularization of a two-dimensional spin-$3/2$ magnet