Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2003-12-16
J. Phys.: Condens. Matter, 16, pp. 5469-5482 (2004)
Physics
Condensed Matter
Strongly Correlated Electrons
15 pages, 9 figures; 1 new figure, additional references cited
Scientific paper
10.1088/0953-8984/16/30/010
The 2D ferromagnetic Kondo model with classical corespins is studied for a hole doping up to x = 0.125 via unbiased Monte Carlo (MC) simulations. A canonical algorithm for finite temperatures is developed. We show that with realistic parameters for the manganites and at low temperatures, the double-exchange mechanism does not lead to phase separation on a two-dimensional lattice but rather stabilizes individual ferromagnetic polarons. A detailed analysis of unbiased MC results reveals that the polarons can be treated as independent particles. It is found that a simple polaron model perfectly describes the physics of the FM Kondo model. The ferromagnetic polaron picture provides an obvious explanation for the pseudogap in the one-particle spectral function $A_k(\omega)$ observed in the FM Kondo model.
Daghofer Maria
der Linden Wolfgang von
Evertz Hans Gerd
Koller Winfried
No associations
LandOfFree
Polaronic Aspects of the two-dimensional Ferromagnetic Kondo 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 Polaronic Aspects of the two-dimensional Ferromagnetic Kondo Model, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polaronic Aspects of the two-dimensional Ferromagnetic Kondo Model will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-510915