Magnetoelectric effects in the skyrmion host material Cu2OSeO3
Condensed Matter - Strongly Correlated Electrons
Condensed Matter - Materials Science
Strongly Correlated Electrons (cond-mat.str-el)
ddc:530
0103 physical sciences
Materials Science (cond-mat.mtrl-sci)
FOS: Physical sciences
01 natural sciences
7. Clean energy
Article
DOI:
10.1038/srep15025
Publication Date:
2015-10-08T09:45:54Z
AUTHORS (5)
ABSTRACT
AbstractInsulating 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 magnetoelectric coupling, polarization and dielectric constants of the ordered magnetic and polar phases of single-crystalline Cu2OSeO3 in external magnetic fields up to 150 mT and at temperatures below 60 K. From these measurements we construct a detailed phase diagram. Especially, the skyrmion phase and the metamagnetic transition of helical to conical spin order are characterized in detail. Finally we address the question if there is any signature of polar order that can be switched by an external electric field, which would imply multiferroic behaviour of Cu2OSeO3.
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