Mechanism of lattice-distortion-induced electric-polarization flop in the multiferroic perovskite manganites

Masahito Mochizuki*, Nobuo Furukawa

*この研究の対応する著者

研究成果: Article査読

37 被引用数 (Scopus)

抄録

We theoretically study a competition between two types of spin cycloids (ab-plane and bc-plane ones) in the multiferroic perovskite manganites, which is an origin of intriguing magnetoelectric phenomena in these compounds. Analysis of a microscopic model using the Monte-Carlo method reveals that their competition originates from a conflict between the single-ion anisotropy and the Dzyaloshinsky-Moriya interaction. It is demonstrated that the conflict can be controlled by tuning the second-neighbor spin exchanges through the GdFeO 3-type distortion, which leads to a cycloidal-plane flop from ab to bc observed in the solid-solution systems like Eu 1-xY xMnO 3 and Gd 1-xTb xMnO 3 with increasing x.

本文言語English
論文番号053704
ジャーナルjournal of the physical society of japan
78
5
DOI
出版ステータスPublished - 2009 5月 1
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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