Electric-field switching of a magnetic propagation vector in a helimagnet

H. Murakawa, Yoshinori Onose, Y. Tokura

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)

Abstract

We report novel magnetoelectric properties of a quantum-spin helimagnet Ba2CuGe2O7 with a noncentrosymmetric (but nonpolar) crystal structure. It was found that the spin helicity of the cycloidal spin order is always fixed to the lattice, therefore the magnetic propagation vector k determines the sign of electric polarization in Ba2CuGe2O7. Consequently, not only the magnetic-field drive of the ferroelectric domain but also the electric-field switching of magnetic k vector can be achieved.

Original languageEnglish
Article number147201
JournalPhysical Review Letters
Volume103
Issue number14
DOIs
Publication statusPublished - 2009 Sep 29
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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