Correlation between ferroelectric polarization and sense of helical spin order in multiferroic MnWO4

Hajime Sagayama, Koji Taniguchi, Nobuyuki Abe, Taka Hisa Arima, Minoru Soda, Masato Matsuura, Kazuma Hirota

Research output: Contribution to journalArticle

66 Citations (Scopus)

Abstract

We report a polarized-neutron-diffraction study on a single crystal sample of MnWO4, wherein the ferroelectricity and spiral magnetic order coexist. The direction of electric polarization controls the sense of helix that can be detected from the difference in intensities of magnetic satellites for parallel and antiparallel spin directions of incident neutrons with respect to a scattering vector. The temperature dependence of the difference agrees well with that of the electric polarization. These results corroborate that an inverse effect of a Dzyaloshinskii-Moriya interaction is the origin of the spontaneous electric polarization in the spiral phase of MnWO4.

Original languageEnglish
Article number220407
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume77
Issue number22
DOIs
Publication statusPublished - 2008 Jun 30

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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