Abstract
The anisotropic Heisenberg antiferromagnet (AF), which is defined as a three-dimensional simple-cubic lattice with in-plane antiferromagnetic interaction {ital J}{sub } and interplane coupling {ital J}{sub {perpendicular}}={gamma}{ital J}{sub } and is believed to describe the magnetic properties of the cupric oxide materials, is studied using low-temperature spin-wave theory. The dependence of the {ital T}=0 staggered magnetization, ground-state energy, transverse susceptibility, spin-wave velocity, and the Neel temperature {ital T}{sub {ital N}} on the anisotropy parameter {gamma} (0{le}{gamma}{le}1) are obtained. These results are found to be in satisfactory agreement with existing experiments on cupric oxide materials. The apparent difference between the muon-spin resonance and neutron-scattering results for the ordered moment in the AF state is well explained.
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