On the value of the Curie temperature in doped manganites

We have verified that the variational mean field theory approach suggested by Narimanov and Varma (preprint cond-mat/0002191) being applied to the realistic two-band model provides a good agreement with experimental data for the Curie temperature in doped manganites A${}_{1-x}$B${}_x$MnO${}_3$ ($x\simeq 0.3$). We have also considered the problem of an interplay between the ferromagnetic and antiferromagnetic interactions by using the same approach.