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

Satoshi Okamoto, Sumio Ishihara, Sadamichi Maekawa

研究成果: Article査読

66 被引用数 (Scopus)

抄録

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.

本文言語English
論文番号144403
ページ(範囲)1444031-1444038
ページ数8
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
65
14
出版ステータスPublished - 2002 4 1
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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