Theory of magnetic switching of ferroelectricity in spiral magnets

Masahito Mochizuki, Nobuo Furukawa

研究成果: Article査読

46 被引用数 (Scopus)

抄録

We propose a microscopic theory for magnetic switching of electric polarization (P) in the spin-spiral multiferroics by taking TbMnO3 and DyMnO3 as examples. We reproduce their phase diagrams under a magnetic field Hex by Monte Carlo simulation of an accurate spin model and reveal that competition among the Dzyaloshinskii-Moriya interaction, spin anisotropy, and spin exchange is controlled by the applied Hex, resulting in magnetic transitions accompanied by reorientation or vanishing of P. We also discuss the relevance of the proposed mechanisms to many other multiferroics such as LiCu2O2, MnWO4, and Ni3V2O4.

本文言語English
論文番号187601
ジャーナルPhysical Review Letters
105
18
DOI
出版ステータスPublished - 2010 10 25
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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