LOW-TEMPERATURE RESISTIVITY OF ZENER FERROMAGNETS

Low-temperature resistivity rho(T) of Zener ferromagnets due to the in teraction between the conducting and magnetic subsystem is studied. Th e effective Hamiltonian is obtained by using the representation of Hub bard'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 simul ated by a vector field with random orientation and location of scatter ing center. The obtained dependence rho(T) = rho(0) + rho(1) T-3/2 + r ho(2)T(5/2) is compared with the available experimental and theoretica l results. (C) 1998 American Institute of Physics.