Fermi liquid characteristics for ferromagnetic ~manganites, A1−xBxMnO3, are evaluated in the tight-binding approximation and compared with experimental data for the best studied region x≃0.3. The bandwidths change only slightly for different compositions. The Sommerfeld coefficient, γ, the T2-term in resistivity and main scales in optical conductivity agree well with the two band model. The ``2.5'' - transition due to a ``neck'' forming at Fermi surface, is found at x=0.3. The mean free path may change from 3 to 80 interatomic distances in the materials, indicating that samples' quality remains a pressing issue for the better understanding of manganites.
@article{arxiv.cond-mat/9909112,
title = {Fermi Liquid Theory and Ferromagnetic Manganites at Low Temperatures},
author = {M. O. Dzero and L. P. Gor'kov and V. Z. Kresin},
journal= {arXiv preprint arXiv:cond-mat/9909112},
year = {2009}
}