Orbital ordering in (formula presented) Electron-electron and electron-lattice interactions

Satoshi Okamoto, Sumio Ishihara, Sadamichi Maekawa

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

The interactions between (formula presented) orbitals in neighboring sites are investigated in (formula presented) 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
Pages (from-to)1-8
Number of pages8
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume65
Issue number14
DOIs
Publication statusPublished - 2002 Jan 1
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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