Power-law Form of the Temperature Dependence of the Magnon Specific Heat CM(T) in Linear, Planar and Spatial Antiferromagnets

Abstract

The power-law form of the temperature dependence of the magnon specific heat has been calculated for some real, low dimensionality antiferromagnetic crystals. The simple power laws predicted from dimensionality considerations are reproduced in the low temperature, non-interacting spin-wave approximation, but with limited validity.