Thermodynamics of the pyrochlore-lattice quantum Heisenberg antiferromagnet
Thermodynamics of the pyrochlore-lattice quantum Heisenberg antiferromagnet
We use the rotation-invariant Green's function method (RGM) and the high-temperature expansion (HTE) to study the thermodynamic properties of the Heisenberg antiferromagnet on the pyrochlore lattice. We discuss the excitation spectra as well as various thermodynamic quantities, such as spin correlations, uniform susceptibility, specific heat and static and dynamical structure …