Orbital ordering in LaMnO3: Electron-electron and electron-lattice interactions

Satoshi Okamoto, Sumio Ishihara, Sadamichi Maekawa

Research output: Contribution to journalArticle

66 Citations (Scopus)

Abstract

The interactions between eg orbitals in neighboring sites are investigated in LaMnO3 by taking into account virtual exchange of electrons and phonons. The spin and orbital ordering temperatures and the spin-wave dispersion relation are calculated. We find that the orbital ordering is mainly caused by the electronic interactions and that the Jahn-Teller coupling is much smaller than that reported previously. We propose that the elastic constant shows a characteristic change at the Néel temperature by the spin and orbital couplings and the higher-order Jahn-Teller coupling.

Original languageEnglish
Article number144403
Pages (from-to)1444031-1444038
Number of pages8
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume65
Issue number14
Publication statusPublished - 2002 Apr 1
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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