Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2000-11-28
Phys. Lett. A 284, 286 (2001)
Physics
Condensed Matter
Strongly Correlated Electrons
6 RevTex pages, 3 embedded PostScript figures
Scientific paper
10.1016/S0375-9601(01)00321-8
Spin dynamics is calculated in the ferromagnetic (FM) state of the generalized Kondo lattice model taking into account strong on-site correlations between e_g electrons and antiferromagnetic (AFM) exchange among t_{2g} spins. Our study suggests that competing FM double-exchange and AFM super-exchange interaction lead to a rather nontrivial spin-wave spectrum. While spin excitations have a conventional Dq^2 spectrum in the long-wavelength limit, there is a strong deviation from the spin-wave spectrum of the isotropic Heisenberg model close to the zone boundary. The relevance of our results to the experimental data are discussed.
Mancini Ferdinando
Perkins Natalia B.
Plakida N. M.
No associations
LandOfFree
Spin wave dispersion softening in the ferromagnetic Kondo lattice model for manganites does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Spin wave dispersion softening in the ferromagnetic Kondo lattice model for manganites, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spin wave dispersion softening in the ferromagnetic Kondo lattice model for manganites will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-114766