Abstract
Using soft x-ray diffraction at the Dy- resonance, pronounced circular dichroism in the ferroelectric phase of is observed in connection with sizable and components of the Dy- magnetic moments. This provides strong evidence for cycloidal order of the moments, corroborating that inversion-symmetry breaking in this material is not accomplished by the Mn spins alone. The circular dichroism allows us to image multiferroic domains that are imprinted on the surface of using the local charging by the x-ray beam via the photoelectric effect.
- Received 6 February 2010
DOI:https://doi.org/10.1103/PhysRevLett.105.167207
© 2010 The American Physical Society