Theory of the reentrant charge-order transition in the manganites
- 1 June 2001
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 89 (11) , 6627-6629
- https://doi.org/10.1063/1.1358326
Abstract
A theoretical model for the reentrant charge-order transition in the manganites is examined. This transition is studied with a purely electronic model for the Mn electrons: the extended Hubbard model. The electron-phonon coupling results in a large nearest-neighbor repulsion between electrons. Using a finite-temperature Lanczos technique, the model is diagonalized on a 16-site periodic cluster to calculate the temperature-dependent phase boundary between the charge-ordered and homogeneous phases. A reentrant transition is found. The results are discussed with respect to the specific topology of the 16-site cluster.Comment: 3 pages, 2 ps figures included in text, submitted to the 8th MMM-Intermag conferencAll Related Versions
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