Rotation of an electric polarization vector by rotating magnetic field in cycloidal magnet Eu0.55Y0.45MnO3

H. Murakawa, Y. Onose, F. Kagawa, S. Ishiwata, Y. Kaneko, Y. Tokura

Research output: Contribution to journalArticlepeer-review

52 Citations (Scopus)

Abstract

To clarify the microscopic origin of the gigantic magnetoelectric effect in multiferroics, we have investigated the variation of an electric polarization (P) vector under a rotating magnetic field (H) for a cycloidal helimagnet Eu0.55Y0.45MnO3 as a canonical example. P rotates smoothly by rotating H around the magnetic propagation wave vector k, which can be well understood by the rotation of the conical spin structure around k. We also show that the rotation process of the conical spin structure under H is crucial for the retention or reversal of the spin helicity or equivalently of the direction of P.

Original languageEnglish
Article number197207
JournalPhysical Review Letters
Volume101
Issue number19
DOIs
Publication statusPublished - 2008 Nov 6
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Rotation of an electric polarization vector by rotating magnetic field in cycloidal magnet Eu<sub>0.55</sub>Y<sub>0.45</sub>MnO<sub>3</sub>'. Together they form a unique fingerprint.

Cite this