Correlation Effects on the Double Exchange Model in a Ferromagnetic Metallic Phase

Details Correlation Effects on the Double Exchange Model in a Ferromagnetic Metallic Phase Correlation Effects on the Double Exchange Model in a Ferromagnetic Metallic Phase

2000-07-04

arxiv.org/abs/cond-mat/0007041v1

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, 4 eps figures, to appear in J. Phys. Soc. Jpn

Scientific paper

10.1143/JPSJ.69.3063

The effect of the Hubbard interaction among conduction electrons on the double exchange model is investigated in a ferromagnetic metallic phase. Applying iterative perturbation theory to the Hubbard interaction within dynamical mean field theory, we calculate the one-particle spectral function and the optical conductivity, in which coherent-potential approximation is further used to treat the ferromagnetic Hund coupling between conduction electrons and localized spins. Identifying the decrease of the magnetization for the localized spin with the increase of the temperature, we discuss the temperature dependence of the one-particle spectrum and the optical conductivity. It is found that the interplay between the Hund coupling and the Hubbard interaction dramatically changes the spectral function, while it is somehow obscured in the optical conductivity.

Affiliated with

Also associated with

No associations

Rating

Correlation Effects on the Double Exchange Model in a Ferromagnetic Metallic Phase 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 Correlation Effects on the Double Exchange Model in a Ferromagnetic Metallic Phase, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Correlation Effects on the Double Exchange Model in a Ferromagnetic Metallic Phase will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-121197