Low-temperature resistivity of Zener ferromagnets

Low-temperature resistivity rho(T) of Zener ferromagnets due to the interaction between the conducting and magnetic subsystem is studied. The effective Hamiltonian is obtained by using the representation of Hubbard's operators in terms of local pseudospins and spinless fermions. The contribution to rho(T) from scattering of charge carriers by spin waves and magnetic inhomogeneities is considered. The latter are simulated by a vector field with random orientation and location of scattering center. The obtained dependence rho(T) = rho(0) + rho(1) T-3/2 + rho(2)T(5/2) is compared with the available experimental and theoretical results. (C) 1998 American Institute of Physics.