Spin dynamics in the generalized ferromagnetic Kondo model for manganites

Abstract

Dynamical spin susceptibility is calculated for the generalized ferromagnetic Kondo model which describes itinerant $e_g$ electrons interacting with localized $t_{2g}$ electrons with antiferromagnetic coupling. The calculations done in the mean field approximation show that the spin-wave spectrum of the system in ferromagnetic state has two branches, acoustic and optic ones. Self-energy corrections to the spectrum are considered and the acoustic spin-wave damping is evaluated.

References in corpus (3)

• Electronic origin of magnetic and orbital ordering in insulating LaMnO_3
• Static and Dynamical Properties of the Ferromagnetic Kondo Model with Direct Antiferromagnetic Coupling Between the localized $t_{2g}$ Electrons
• The Kondo lattice model with correlated conduction electrons

Cited by in corpus (5)

• A novel spin wave expansion, finite temperature corrections and order from disorder effects in the double exchange model
• Theory of the evolution of magnetic order in Fe${}_{1+y}$Te compounds with increasing interstitial iron
• Spin wave dispersion softening in the ferromagnetic Kondo lattice model for manganites
• Order from disorder in the double-exchange model
• Theory of spin wave excitations of metallic A-type antiferromagnetic manganites