Sousa, J. Ricardo de; Araújo, Ijanı́lio G; Plascak, J.A - In: Physica A: Statistical Mechanics and its Applications 278 (2000) 1, pp. 181-187
The criticality of the quantum anisotropic spin-12 Heisenberg antiferromagnetic model is studied by the mean-field renormalization group (MFRG) approach. The critical temperature and the thermal exponent for the ferromagnetic (F) and antiferromagnetic (AF) cases are obtained as a function of the...