Statistical Models of the Polaronic Phase Transition in Manganites

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We propose two statistical models for description the metal-insulator phase transition coupled with paramagnetic-ferromagnetic phase transition in manganites of the type La_{1-x}Sr_xMnO_3. The first one based on the competition of small polarons and delocalized carriers. In the second one the conductivity appears as a result of overlapping of large polarons. We compare our models with the experimental data.
RevTeX 4 pages with 2 figures

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Materials Science

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http://salesiana.dossiersoluciones.com/handle/123456789/28546

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/9808248
 http://arxiv.org/abs/cond-mat/9808248

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arXiv