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A frustrated quantum spin-${\boldmath s}$ model on the Union Jack lattice with spins ${\boldmath s>1/2}$
R. F. Bishop, P. H. Y. Li
The zero-temperature phase diagrams of a two-dimensional frustrated quantum antiferromagnetic system, namely the Union Jack model, are studied using the coupled cluster method (CCM…
The Coupled Cluster Method Applied to Quantum Magnets: A New LPSUB Approximation Scheme for Lattice Models
R F Bishop, P H Y Li
A new approximation hierarchy, called the LPSUB scheme, is described for the coupled cluster method (CCM). It is applicable to systems defined on a regular spatial lattice. We t…
Magnetic order in a spin-1/2 interpolating kagome-square Heisenberg antiferromagnet
R. F. Bishop, P. H. Y. Li, D. J. J. Farnell +1
The coupled cluster method is applied to a spin-half model at zero temperature (), which interpolates between Heisenberg antiferromagnets (HAF's) on a kagome and a square latt…
Magnetic order on a frustrated spin-1/2 Heisenberg antiferromagnet on the Union Jack lattice
R. F. Bishop, P. H. Y. Li, D. J. J. Farnell +1
We use the coupled cluster method (CCM) to study the zero-temperature phase diagram of a 2D frustrated spin-half antiferromagnet, the so-called Union Jack model. It is defined on a…