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Jahn-Teller distortion and electronic correlation effects in undoped manganese perovskites

Patrizia Benedetti·Roland Zeyher
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Abstract

The formation of a long-range Jahn-Teller distortion in undoped manganites is studied within the dynamical mean-field theory taking both electron-phonon and electron-electron interactions into account. We find that the observed insulating behavior at temperatures above the Jahn-Teller transition and the bond-length changes below it can most naturally by explained by assuming a strong electronic repulsion and a rather weak electron-phonon coupling.

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Patrizia Benedetti, Roland Zeyher. 1998-10-15. Jahn-Teller distortion and electronic correlation effects in undoped manganese perovskites. https://doi.org/10.1103/physrevb.59.9923

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