We use the temperature of the structural phase transition to determine the Jahn-Teller (JT) coupling constant in the model derived for LaMnO3 which includes both the superexchange between S=2 spins and the JT effect. We also investigate the dependence of the exchange constants on the value of the on-site Coulomb element U, and on the orbital ordering.
@article{arxiv.cond-mat/0303232,
title = {Origin of the Orbital Ordering in LaMnO$_3$},
author = {Olga Sikora and Andrzej M. Oles},
journal= {arXiv preprint arXiv:cond-mat/0303232},
year = {2022}
}