Orbital polarization in manganese oxides

Ryo Maezono, Sumio Ishihara, Naoto Nagaosa

研究成果: Article査読

135 被引用数 (Scopus)

抄録

We study the role of orbital degrees of freedom in perovskite manganites, which are well known as colossal-magnetoresistance (CMR) compounds. The double degeneracy of the (Formula presented) orbitals is treated with isospin. Orbital polarization is essential to explain the variety of phases in these compounds and their physical properties. Especially important is the fact that the orbital is aligned as (Formula presented) in the metallic layered antiferromagnetic state, which explains the experimentally observed quasi-two-dimensional transport and absence of spin canting. A large orbital fluctuation in the ferromagnetic state is also predicted.

本文言語English
ページ(範囲)R13993-R13996
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
57
22
DOI
出版ステータスPublished - 1998 1月 1

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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