%0 Journal Article
%T Low-temperature electrical transport and double exchange in La(Pb,Ca)MnO
%A M. Jaime
%A P. Lin
%A M. B Salamon
%A P. Han
%J Physics
%D 1997
%I arXiv
%R 10.1103/PhysRevB.58.R5901
%X The resistivity in the ferromagnetic state of flux-grown La_{2/3}(Pb,Ca)_{1/3}MnO_3 single crystals, measured in magnetic fields up to 7 T, reveals a strong quadratic temperature dependence at and above 50 K. At lower temperatures, this contribution drops precipitously leaving the resistivity essentially temperature independent below 20 K. The Seebeck coefficient also reflects a change of regime at the same temperature. We attribute this behavior to a cut-off of single magnon scattering processes at long wavelengths due to the polarized bands of a double-exchange ferromagnet.
%U http://arxiv.org/abs/cond-mat/9709305v3