Phase Diagram of Doped Manganates
Strongly Correlated Electrons
2007-05-23 v1 Materials Science
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.
Keywords
Cite
@article{arxiv.cond-mat/9711145,
title = {Phase Diagram of Doped Manganates},
author = {Daniel P. Arovas and Francisco Guinea},
journal= {arXiv preprint arXiv:cond-mat/9711145},
year = {2007}
}
Comments
6 pages, 3 encapsulated PostScript figures