Electric polarization, magnetoelectric effect, and orbital state of a layered iron oxide with frustrated geometry

A. Nagano, M. Naka, J. Nasu, S. Ishihara

研究成果: Article

98 引用 (Scopus)

抜粋

A layered iron oxide RFe2O4 (R denotes rare-earth-metal elements) is an exotic dielectric material with charge-order (CO) driven electric polarization and magnetoelectric effect caused by spin-charge coupling. In this paper, a theory of electronic structure and dielectric property in RFe2O4 is presented. Charge frustration in paired-triangular lattices allows a charge imbalance without inversion symmetry. Spin frustration induces reinforcement of this polar CO by a magnetic ordering. We also analyze an orbital model for the Fe ion which does not show a conventional long-range order.

元の言語English
記事番号217202
ジャーナルPhysical Review Letters
99
発行部数21
DOI
出版物ステータスPublished - 2007 11 19
外部発表Yes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

フィンガープリント Electric polarization, magnetoelectric effect, and orbital state of a layered iron oxide with frustrated geometry' の研究トピックを掘り下げます。これらはともに一意のフィンガープリントを構成します。

  • これを引用