Orbital ordering in paramagnetic LaMnO3 and KCuF3

J. E. Medvedeva, J. E. Medvedeva, M. A. Korotin, V. I. Anisimov, A. J. Freeman

Research output: Contribution to journalArticlepeer-review

51 Citations (Scopus)


Ab initio studies of the stability of orbital ordering, its coupling to magnetic structure and its possible origins (electron-phonon and/or electron-electron interactions) are reported for two perovskite systems, LaMnO3 and KCuF3. We present an average spin state calculational scheme that allowed us to treat a paramagnetic state and to succesfully describe the experimental magnetic or orbital phase diagram of both LaMnO3 and KCuF3 in crystal structures when the Jahn-Teller distortions are neglected. Hence, we conclude that the orbital ordering in both compounds is purely electronic in origin.

Original languageEnglish
Article number172413
Pages (from-to)1724131-1724134
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number17
Publication statusPublished - 1 May 2002
Externally publishedYes


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