Continuum Double Exchange Model
Strongly Correlated Electrons
2009-10-31 v2 High Energy Physics - Theory
Abstract
We present a continuum model for doped manganites which consist of two species of quantum spin 1/2 fermions interacting with classical spin fields. The phase structure at zero temperature turns out to be considerably rich: antiferromagnetic insulator, antiferromagnetic two band conducting, canted two band conducting, canted one band conducting and ferromagnetic one band conducting phases are identified, all of them being stable against phase separation. There are also regions in the phase diagram where phase separation occurs.
Cite
@article{arxiv.cond-mat/9810389,
title = {Continuum Double Exchange Model},
author = {J. M. Roman and J. Soto},
journal= {arXiv preprint arXiv:cond-mat/9810389},
year = {2009}
}
Comments
14 pages, LaTeX2e file, two eps included figures. Published version