182 citations · 1k across the 34 of their papers we have counts for
34 papers
Proceedings of the 35th Annual Australian/New Zealand Condensed Matter and Materials Meeting
K. Radhanpura, S. Hargreaves, R. A. Lewis +42
The 35th Australian/New Zealand Annual Condensed Matter and Materials Meeting was held at the Charles Sturt University campus in Wagga Wagga, NSW, Australia from the 1st to the 4th…
A Frustrated 3-Dimensional Antiferromagnet: Stacked Layers
Onofre Rojas, C. J. Hamer, J. Oitmaa
We study a frustrated 3D antiferromagnet of stacked layers. The intermediate 'quantum spin liquid' phase, present in the 2D case, narrows with increasing interlayer cou…
The Quantum Compass Model on the Square and Simple Cubic Lattices
J. Oitmaa, C. J. Hamer
We use high-temperature series expansions to obtain thermodynamic properties of the quantum compass model, and to investigate the phase transition on the square and simple cubic la…
The Fate of the Two-Magnon Bound State in the Heisenberg Antiferromagnet
C. J. Hamer
The energy spectrum of the two-magnon bound states in the Heisenberg-Ising antiferromagnet on the square lattice are calculated using series expansion methods. The results confirm…
Critical Behaviour of Structure Factors at a Quantum Phase Transition
C. J. Hamer
We review the theoretical behaviour of the total and one-particle structure factors at a quantum phase transition for temperature T=0. The predictions are compared with exact or nu…
Two-particle bound states and one-particle structure factor in a Heisenberg bilayer system
A. Collins, C. J. Hamer
The S=1/2 Heisenberg bilayer spin model at zero temperature is studied in the dimerized phase using analytic triplet-wave expansions and dimer series expansions. The occurrence of…