Phase Diagram of Doped Manganates

Details Phase Diagram of Doped Manganates Phase Diagram of Doped Manganates

1997-11-15

arxiv.org/abs/cond-mat/9711145v1

Physics

Condensed Matter

Strongly Correlated Electrons

6 pages, 3 encapsulated PostScript figures

Scientific paper

The phase diagram of doped manganate compounds La_{1-x}A_xMnO_3 (with divalent A) is studied. We analyze an extension of the double exchange model using the Schwinger boson formalism. Earlier work by de Gennes on the existence of a canted phase is reproduced, although this phase is shown to be unstable towards phase separation in a broad regime of physical interest. We numerically solve the model's mean field equations and plot its phase diagram.

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