Phase Diagram of Doped Manganates

Daniel P. Arovas; Francisco Guinea

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Phase Diagram of Doped Manganates

Daniel P. Arovas·Francisco Guinea

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Abstract

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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Daniel P. Arovas, Francisco Guinea. 1997-11-15. Phase Diagram of Doped Manganates. https://arxiv.org/abs/cond-mat/9711145

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