Magnetoelectric effects in the skyrmion host material Cu2OSeO3

• DOI: 10.1038/srep15025
• Publication Date: 2015-10-08T09:45:54Z
• Authors: E. Ruff; P. Lunkenheimer; A. Loidl; H. Berger; S. Krohns
• Keywords: Skyrmion; Magnetoelectric effect

Insulating helimagnetic Cu2OSeO3 shows sizeable magnetoelectric effects in its skyrmion phase. Using magnetization measurements, magneto-current analysis and dielectric spectroscopy, we provide a thorough investigation of coupling, polarization constants the ordered magnetic polar phases single-crystalline external fields up to 150 mT at temperatures below 60 K. From these measurements construct detailed phase diagram. Especially, metamagnetic transition helical conical spin order are characterized detail. Finally address question if there is any signature that can be switched by an electric field, which would imply multiferroic behaviour Cu2OSeO3.