Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2003-10-20
Physics
Condensed Matter
Strongly Correlated Electrons
5 pages, 1 figure
Scientific paper
10.1143/JPSJ.73.1661
A double exchange model with quenched disorder for conduction electrons is studied by field theoretical methods. By using a path integral formalism and replica techniques based on it, an ensemble-averaged spin wave dispersion of the localized spins is derived. It is shown that the spectrum of the spin wave has gaps at the multiple of the Fermi wavenumber of the conduction electrons in the presence of disorder, and hence, quenched disorder for electrons adds a striking effect to the dynamics of the localized spins. In the strong disorder limit, the present results suggest spin-glass like behavior due to the frustration of the exchange coupling.
No associations
LandOfFree
Spin wave spectrum of a disordered double exchange model 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 spectrum of a disordered double exchange model, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spin wave spectrum of a disordered double exchange model will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-420815