Generation of electric polarization with rotating magnetic field in helimagnet ZnCr2Se4

Hiroshi Murakawa, Yoshinori Onose, Kenya Ohgushi, Shintaro Ishiwata, Yoshinori Tokura

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63 Citations (Scopus)

Abstract

Application of magnetic field (H) can produce the ferroelectric polarization (P) in a proper screw helimagnet, ZnCr2Se4. While rotating H, we observed the cyclic generation of polarization current arising from the change of P in the conical spin structure. Versatile variations of P in magnitude and sign are observed while changing the direction and magnitude of H. The behaviors are ascribed to the rotation of the spin cones and the conserving or reversing spin-helicity upon the flop of the screw propagation vector, as affected by the competition among the magnetic anisotropy, inclination of the cone axis to H, and the P domain-wall stability.

Original languageEnglish
Article number043709
Journaljournal of the physical society of japan
Volume77
Issue number4
DOIs
Publication statusPublished - 2008 Apr 1
Externally publishedYes

Keywords

  • Ferroelectricity
  • Helicity
  • Magnetoelectric effect
  • Proper screw
  • ZnCr Se

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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