Continuum Double Exchange Model

Details Continuum Double Exchange Model Continuum Double Exchange Model

1998-10-29

arxiv.org/abs/cond-mat/9810389v2

Phys. Rev. B59 (1999) 11418

Physics

Condensed Matter

Strongly Correlated Electrons

14 pages, LaTeX2e file, two eps included figures. Published version

Scientific paper

10.1103/PhysRevB.59.11418

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.

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