Ground-state properties of the generalized ferromagnetic Kondo lattice model

A special kind of bosonization technique and renormalization group theory a re employed to study an extended ferromagnetic Kondo lattice model. An effe ctive Hamiltonian is deduced. On the basis of this effective Hamiltonian th e phase diagram is discussed, and the effects of the introduced Hund anisot ropy and antiferromagnetic interaction between the local spins are clarifie d. The on-site interaction between the conduction electrons contributes to the effective ferromagnetic interaction between the local spins through the Hund interaction.